Can you turn the volume up a bit?
你能把音量开大点儿吗？
This work has grown in volume recently.
这项工作的量最近增加了。
New roads are being built to cope with the increased volume of traffic.
正在修建新的道路以应付增加了的交通量。
The number of accidents is proportionate to the increased volume of traffic.
交通事故的数字与交通量的增长成正比。