he was nibbling on the apple. take great pains with one's studies
Related Translations:
啃: 动词1.(一点一点儿地往下咬) bite; gnaw; nibble 短语和例子啃老玉米 nibble at an ear of corn; 把骨头上的肉啃下来 bite meat off the bone; gnaw the meat off a bone; 老鼠能啃穿木头。 a rat can gnaw a hole through wood. 他在啃苹果。 he wa
