Splitnut
对开螺母
🗣️ 情景例句
in the children's ward.
在小儿科病房那边。
Try (your friend) before you trust him.
朋友要经考验，才能取得信任。
This is done by a great number of ring-shaped air jets on the bottom of the craft.
船底装上大量环状喷气嘴以实现这一目的。