Sand shifter
[机] 筛砂机
🧩 词语组成解析
sand
[sænd]
n. 沙;沙滩;沙色;
vt. 撒沙于;用砂纸磨光;
n. 搬移东西者, 回避论点者, 领班, 辅助工, 移动装置, 开关\\n[计] 移头器; 移位器; 移带器
🗣️ 情景例句
Hi, Carl.
嗨， Carl。
Your right hand is swollen.Does it hurt?
你的右手是肿的.它受伤了吗？
This would solve the problem of ventilation, for if a train entered this tunnel, it would draw in fresh air behind it.
因为如果有列火车开进隧道，它就把新鲜空气随之抽进了隧道。