take effect见效；见效；开始起作用；
例如When do you think the new it regulations will take effect?
The new traffic law will take effect next week.
新交通法下星期生效。
The new tax law will not take effect until october.
新税法到十月份才生效。
How long for the gas to take effect?
需要多久毒气才能起作用？
