I could sit and watch the river all day long.
我可以整天坐在这里看那条河。
The general had to get his troops across the river.
将军必须让部队过河。
His guitar makes a noise like a wooden ruler being twanged upon a desk
他的吉他发出一声仿佛木尺弹在课桌上的噪音。
He cracked me on the head with a ruler.
他用尺子猛击我的'头部。
The system ran like a well-oiled machine.
这个系统运行得就像一台上了油的机器。
By that time the new system should be up and running.
到那时这个新系统应该会运转起来了。