working length

例句：

1. 1. The machine's working length is adjustable.
   这台机器的工作长度是可调的。
2. 2. The new tool has a longer working length than the old one.
   这款新工具比旧款工具的工作长度更长。
3. 3. The engineer adjusted the working length of the saw to fit the job better.
   工程师调整了锯的工作长度，以便更好地适应工作需求。