400 trucks may sit in a jam for ten hourswaiting to cross the limited number of bridges.
400 辆卡车可能会堵上10个小时才能通过有限的几座桥。
《柯林斯英汉双解大词典》
2
After spotting a wallet on the front seat inside a parked car with its window down, he stood guard in the rain for about two hourswaiting for the owner to return.
他透过摇下的车窗,在一辆停着的车的前座上发现了一个钱包,于是在雨中守了大约两个小时,等待车主回来。
3
I sat in his office for three hourswaiting for him.