🧩 词语组成解析
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['bækˌʌp]
n. 支持，后援;阻塞;<计>备份文件;[乐]伴奏;
adj. 备用的，后补的;支持性的;伴奏的;
🗣️ 情景例句
That is extremely interesting.
那极为有趣。
I wish you to be more careful.
我希望你更谨慎。
The Turners are going on a train. The conductor is coming round.
特纳一家人在火车上。列车员走过来。