Headloss
扬程损失
🗣️ 情景例句
You mature quickly.
这种人成熟得快。
I'm receiving guests downstairs.
我在楼下接见客人。
You see, the school will be expensive to run and we shall need a lot of good teachers.
你知道，办这所学校要花很多的钱，我们需要很多好教师。