🧩 词语组成解析
fall
[fɔl]
v. 落下;跌倒;减少;沦陷;
n. 落下;瀑布;秋天;减少;
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
That was not the case.
事实并非如此。
No one can call back yesterday;Yesterday will not be called again.
昨日不复来。
As no pumas had been reported missing from any zoo in the country, this one must have been in the possession of a private collector and somehow managed to escape.
由于全国动物园没有一家报告丢了美洲狮，因此那只美洲狮一定是某位私人收藏豢养的，不知怎么设法逃出来了。