n. 背,背部;背面,反面;后面,后部;(椅子等的)靠背;
vt. 使后退;支持;加背书于;下赌注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
🗣️ 情景例句
Good morning, Dad.
早安, 爸爸。
When did you do homework?
你什么时候做家庭作业?
He passed his exams, and even better, when he left university he had earned enough money to start his own business, offering guide services to tourists.