Ysf
abbr. Stony Rapids; Sask; Canada 加拿大; yield safety factor 屈服安全系数
🗣️ 情景例句
Thank you.
谢谢。
Choose an author as you choose a friend.
选书如择友。
I simply don't know. He may have plans, but he hasn't yet spoken to me about them.
我一点儿都不知道。他也许有计划，但他还没跟我谈他的想法呢。