System sand
[机] 循环处理砂
🧩 词语组成解析
sand
[sænd]
n. 沙;沙滩;沙色;
vt. 撒沙于;用砂纸磨光;
🗣️ 情景例句
spend the entire weekend having a good time together here
一起渡过一个快乐的周末
The doctor advised me to get plenty of exercise.
医生劝我要多运动。
So was born the echo-sounding apparatus, now in general use in ships.
这样就产生了目前各种船舶上普遍应用的回声探测仪。