Shuttling
n. 往复运动；梭动
🗣️ 情景例句
Sit down, sit down.
请坐， 请坐。
We should keep them informed of what is going on here.
我们应该让他们知道这里发生的事情。[分词作定语]
During the summer, I noticed tat the leaves of the tree were beginning to wither.
到了夏天，我发现树叶开始枯萎，