🗣️ 情景例句
How much paint, how many hours of work ...
多少油漆， 多少小时的工作量……
Is the source of the information reliable?
那个消息的来源可靠吗？
While two detectives were keeping guard at the door, two others opened the parcel.
这时两个侦探把住门口，另外两个侦探打开了包裹。