Validity of bids
[经] 投标有效期
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
abbr. 商业智能开发工具集（Business Intelligence Development Studio）；本迪克斯综合数据系统（Bendix Integrated Data System）
🗣️ 情景例句
If you fail this test you'll be kicked out of school.
你这次考试要是不过就得离校。
It's no use pumping a dry well.
徒劳无益。
In England, too, spring is longer.Spring in England can last from late March to May.
英国的春天也较长，能够从3月下旬延续到5月。