“用不”造句

用不着她一来电话你就往楼上跑。
You don't have to go running upstairs every time she rings.

除非知道密码，否则谁也用不了那台计算机。
No-one could use the computer unless they had a password.

用不了5小时，设备就又能嗡嗡地运转了。
Within five hours, the equipment will be humming away again.

• #用不