Back-ups
(back-up 的复数) [计] 后援; 备份\\n[医] 后盾(在大气中高压电流所通过距离)
🧩 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;
不间断电源\\n[计] 不间断电源
🗣️ 情景例句
No way! I wouldn't touch that in any case. Don't push me!
绝不！我无论如何都不会去碰它，别逼我！
Would you please tell us the price of these electric heaters so as to help us make the decision.
能否告知这些电热器的价格，以便我们作出决定。
A hui may be a wedding, burial or conference. The happier events are marked with speeches, singing and dancing.
一个"会"可能是一次婚礼、葬礼或者会议。而较为喜庆的活动，人们要发表演说，唱歌跳舞以示庆贺。