🧩 词语组成解析
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;
exercise
['ɛksɚsaɪz]
n. 练习;运动，训练;运用;典礼;
vi. 锻炼，训练，练习;
vt. 锻炼（身体某部位）;使焦虑，使忧虑;实行，发挥（作用）;运用;
ex出+erc力量+ise表名词，物品，状态 →练习，锻炼
🗣️ 情景例句
After sending investigators to the scene we can now confirm that it was the result of an accidental fire.
在派出调查人员到现场后，我们现在可以确定事故是由意外失火导致的。
A cock is valiant on his own dunghill.
夜郎自大。
She also brought me into touch with everything that could be felt--- soil, wood, silk. As I look back upon those years, I am struck by Annie's wisdom.
她还使我接触到一切可以触摸到的东西--土壤、木头、丝绸等。