Lockgate
n. (运河等的)闸门
🗣️ 情景例句
I am also glad to be here.
我很高兴来这里 。
In case of fire, keep your head.
万一发生火灾，保持镇定。
and the search for oil has done more to improve deep drilling than any other mining activity.
寻找石油比其他任何采矿业对改进深孔钻探作的贡献都要大。