The CX-2 has two timers: a stopwatch that counts up, and a count down timer.

CX-2有两个计时器：秒表既可以顺计时，又可以倒计时。

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Down at the left of the game board is found the count down timer until the next intruders wave.

于左侧的游戏局发现，倒计时定时器，直至下一个入侵者的浪潮。

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Therefore, I set the timer to do the count down of time, say 15 or 20 minutes.

因此，我设置计时器做倒数计时的时间，例如15或20分钟。

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