地道英语smile/grin from ear to ear用法解析
When I got my exam results, I was grinning from ear to ear.当我拿到考试成绩时，我开心极了，笑得合不拢嘴。
ear用法
grin from ear to ear用法解析
v.咧嘴笑，露齿而笑，咧着嘴笑，龇着牙笑；（—层涂料透过其上面一层）显露出来；（织物）有稀路织疵；咧嘴而笑地表示
When I got my exam results, I was grinning from ear to ear.当我拿到考试成绩时，我开心极了，笑得合不拢嘴。
v.咧嘴笑，露齿而笑，咧着嘴笑，龇着牙笑；（—层涂料透过其上面一层）显露出来；（织物）有稀路织疵；咧嘴而笑地表示