🗣️ 情景例句
Are you sending it by regular or by speed?
你要寄平信还是快递？
There must be someone behind the door.
门后必然有人在。
If there is one -- which I take leave to doubt -- then it is older people who create it, not the young themselves.
如果这个问题存在的话 -- 请允许我对此持怀疑态度 -- 那么，这个问题是由老年人而不是青年人造成的。