Ysf
abbr. Stony Rapids; Sask; Canada 加拿大; yield safety factor 屈服安全系数
🗣️ 情景例句
But when Robbie was born,
但当Robbie出生后，
I meet the boy whose aunt is a stewardess.
我遇到那个男孩的姑妈是空中小姐。
Hello, Mr Zhu. I've come to say goodbye. I'm leaving on Sunday.
你好，朱先生。我是来道别的。我星期天离校。