1. I assumed things had gone well for him as he had a big grin on his face. 我想他一切应该进展得很顺利,因为他在咧着大嘴笑。
2. a broad/sheepish grin 合不拢嘴的笑/腼腆地咧嘴笑
/grɪn/ verb [I] (-nn-) A * to smile a wide smile 露齿笑;咧嘴笑;龇牙笑
1. He grinned at me from the doorway. 他在门口向我咧着嘴笑。
2. What are you grinning about? 你龇牙咧嘴笑甚么?
/grɪn/ verb [I] (-nn-) grin and bear it * to accept something bad without complaining 苦笑着忍受;默默忍受
1. I really don't want to go but I guess I'll just have to grin and bear it. 我真的不想去,但也没有甚么办法,去就去吧。
柯林斯COBUILD高阶英汉双解学习词典 - grin
grin ★★☆☆☆
1.VERB 动词露齿而笑;咧嘴大笑 When you grin, you smile broadly.
【语法信息】:V
【语法信息】:V at n
【语法信息】:V-ing
He grins, delighted at the memory...
想到往事,他开心地咧嘴笑了起来。
Sarah tried several times to catch Philip's eye, but he just grinned at her.
萨拉几次想引起菲利普的注意,但是他只是冲她咧嘴笑了笑。
...a statue of a grinning old man cutting the throat of a deer.
一边割鹿喉、一边咧着嘴笑的老人雕像
2.N-COUNT 可数名词露齿的笑;咧嘴的笑 A grin is a broad smile.
【搭配模式】:oft adj N
She came out of his office with a big grin on her face...
她笑容满面地走出他的办公室。
Bobby looked at her with a sheepish grin.
博比望着她腼腆地咧嘴一笑。
3.PHRASE 短语苦笑着忍受;默默承受 If you grin and bear it, you accept a difficult or unpleasant situation without complaining because you know there is nothing you can do to make things better.
【搭配模式】:Vs inflect
They cannot stand the sight of each other, but they will just have to grin and bear it.
他们连看对方一眼都不愿意,但是也只得默默忍受。
牛津高阶英汉双解 第7版 - grin
grin grin / ^rin / verb (-nn-) ~ (at sb) to smile widely  露齿而笑;咧着嘴笑;龇着牙笑: ▪ [V] She grinned amiably at us. 她咧着嘴向我们亲切地微笑。 They grinned with delight when they heard our news. 他们得知我们的消息时高兴得直咧着嘴笑。 He was grinning from ear to ear. 他笑得合不拢嘴。 ▪ [VN] He grinned a welcome. 他咧嘴一笑表示欢迎。 IDIOMS ▪grin and 'bear it (only used as an infinitive and in orders 只用作不定式和用于命令中) to accept pain, disappointment or a difficult situation without complaining  默默忍受;苦笑着忍受: There's nothing we can do about it. We'll just have to grin and bear it. 对此我们无能为力,只好默默地忍受。 noun a wide smile  露齿的笑;咧着嘴笑: She gave a broad grin. 她咧着大嘴笑。 a wry / sheepish grin 咧嘴苦笑;尴尬的笑 'No,' he said with a grin. "不。"他咧嘴笑了笑说。 Take that grin off your face! 别嬉皮笑脸的!
• VERB + GRINhaveHe had a cheeky ~. | I wondered why Dad had a ~ on his face. | crack, flash (sb), give (sb), let out (AmE)
He gave the photographer a big ~. | grin, smileHe grinned his adorable ~. | force, manageHe forced a ~ despite feeling angry. | break into, curl into (AmE), form, split intoThe old man's face broke into a ~. | Her lips started to form a slight ~. | fight, fight back, hide, hold back, stifle, suppressShe tried to stifle a ~. | wear | return
• GRIN + VERBbroaden, grow, grow broader, grow wider, widen | appear, break out (across sb's face), come across sb's face, come over sb's face, creep across sb's face, creep onto sb's face, cross sb's face, form on sb's face, spread across sb's face, spread over sb's faceA mischievous ~ spread across the little girl's face. | be plastered across sb's face, be plastered on sb's face, light sb's face, light up sb's face, play on sb's face, split sb's face, tug at sb's lipsa ~ tugging at the corners of his lips | disappear, fadeHis wry ~ faded. | turn into sthHer ~ turned into a frown.
• PREPOSITIONwith a~‘Fooled you!’ he said, with a cheeky ~. | ~ata ~ at his wife | ~ofa ~ of triumph
• PHRASEStake the ~ off your face, wipe the ~ off your faceTake that ~ off your face! | wipe the ~ off sb's faceI'll soon wipe that silly ~ off her face.
II. verb
• ADVERBbroadly, widelyHe appeared in the doorway grinning broadly. | slightly, weakly | crookedly | brightly, cheerfully, happily | amiably | boyishly, cheekily (BrE), devilishly, impishly, mischievously, playfully | madly, wildly | triumphantly | proudly | inanely, stupidly | nervously, sheepishlyHe just stood there, tongue-tied and grinning sheepishly. | apologetically, ruefully, wrylyShe grinned apologetically when she saw him. | evilly, maliciously, slyly, wolfishly | knowingly | smugly | back, down at, up atShe relaxed and grinned wickedly back at him. | He lay grinning impishly up at me.
• PREPOSITIONatHe stopped eating to ~ at me. | likeHe just stood there, grinning like an idiot. | toShe grinned to herself at the thought. | withThey grinned with pleasure.
• PHRASES~ ear to ear (AmE), ~ from ear to earShe looked at us, grinning from ear to ear.
verb Guy grinned merrily at her SMILE , smile broadly, beam, grin from ear to ear, smile from ear to ear, grin like a Cheshire cat, smirk; informal be all smiles. -opposite(s): FROWN ; SCOWL.