🧩 词语组成解析
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[bæk]
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
You're welcome anytime.
欢迎你随时来玩。
Did you go to the hospital last night?
你昨晚去医院了吗？
Sometimes they eat it in the park or on the road. This take-away food is very popular.
有时他们在公园里或路上食用。这种方便食品颇受欢迎。