Ysf
abbr. Stony Rapids; Sask; Canada 加拿大; yield safety factor 屈服安全系数
🗣️ 情景例句
I'd better hit the books.
我最好勤奋学习。
Sailboats glided motionlessly across the lake.
帆船静静地像滑动似的在湖上前进。
A great many goods were sent to the exhibition from various parts of the world.
大量的商品从世界各地运送到了博览会，