short-cut multiplication

例句：

1. 1.To save time, we can use a short-cut to the office.
   为了节省时间，我们可以使用一个到办公室的捷径。
2. 2.The engineer found a short-cut that would save him a lot of time.
   工程师找到了一条捷径，可以节省他大量的时间。
3. 3.Short-cuts may seem like a good idea, but they often lead to more problems in the long run.
   捷径可能看起来是个好主意，但它们往往在长期内导致更多的问题。