trim control system

例句：

1. 1. The garden needs to be trimmed back a bit.
   花园需要修剪一下。
2. 2. He trimmed his beard neatly.
   他整齐地修剪了胡子。
3. 3. She trimmed the hedge with a hedge clipper.
   她用篱笆剪子修剪了篱笆。