双手握住淘选盘不停旋动将沙金和尘土分开。The pans were held in both hands and swirled around to separate gold particles from the dirt.澄清,淘选通过''.'水磨'. ''把精细的颗粒从粗糙的颗粒中分离出来.To separate fine particles from coarse by...
Coughs and sneezes spread infections much faster in a warm atmos-phere.在温暖的环境中，咳嗽和喷嚏传播疾病的速度要快得多。Coughs and sneezes spread infections.咳嗽和打喷嚏会传播传染病。Sneezes are not the olny way of catching a cold.打喷嚏并不是得了感冒的唯一症状....
The amount of demurrage Incur be us $ 350.该项滞期费为350美元.The author also proposes a new concept: demurrage equality.同时,提出滞期费等式这一新概念.Chatterer must be responsible for demurrage.租船人必须对滞期负责....