Lockstep
[ ['lɔkstep] ]
辅助 Assistant
n. 紧密行进步伐, 因循守旧
🗣️ 情景例句
She was caught in the branches of our tree.
被我们家树上的树枝夹住了。
A merry heart goes all the way.
生性乐天，终身受用。
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。