🧩 词语组成解析
pig
[pɪɡ]
n. 猪;猪肉;令人不快（或讨厌）的人;金属块（锭）;
vi. 生小猪;像猪一样过活;举止像猪;贪吃;
vt. 吃得过量，大吃特吃;生小猪;
back
[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
Where will you be living during your stay here?
你在此期间打算住哪里？
Pupil. He is studying.
学生。正在学习。
The experts were now fully convinced that the animal was a puma,
专家们如今已经完全肯定那只动物就是美洲狮，