a grin on his face中文什么意思

脸上露出笑容

• grin:    n. (因苦痛或愤怒)龇牙咧嘴;露着 ...
• his:    pron. 1.〔he 的所有格〕他 ...
• face:    n. 1.脸，面孔；面貌，样子；面子 ...

例句与用法

1. 10 the float bobbed more violently than before and , with a grin on his face , he began to wind ( 绕 ) in the reel
   浮标比先前摆动得更厉害了，他咧嘴笑了，开始摇绕线轮。