🧩 词语组成解析
backup
['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;
man
[mæn]
n. 男人;人类;男子汉;雇工;
vt. 使振作;操纵;给…配置人员;在…就位;
int. （表示惊讶、气愤等）嘿，天哪;
🗣️ 情景例句
Very few people last in this class for the full hour the very first time.
很少人能够第一次撑完一个小时的课。
Do you fly to Dallas on Sunday?
星期日你们有班机去达拉斯吗？
That's the doorbell, said Ann's mother. They're here!
“门铃响了，”安的母亲说。“他们来啦！”