来自柯林斯例句
How can you teach a child who just grins stupidly at you all day?
如果一个孩子整天都冲着你傻笑,你怎么能教他呢?
I can't help grinning at the funny things the child says.
听到孩子说的那些滑稽事,我忍不住笑了。