Minmei: Oh, but I thought a compass had two arms that go back and forth.

哦，但我认为指南针应该有两个箭头，一只向前，一只向后。

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The compass has a special magnetic pointer which always indicates the North Pole, so it is used to help find the direction that the ship needs to go.

罗盘的指针，有一种特殊的磁场总是显示北极，所以它是用来帮助找到方向，这艘船要走了。

youdao

Augh! There's an outhouse about 200 yards away from here, bring a compass with you when you go.

“噢！离这里两百码远有个茅房，你带上指南针去”，我爸一边说一边差点跳起来。

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One of the latest to go on the market is the ComPass Card in Hong Kong, which works as a credit card, a bank and supermarket card, and even awards bonus points on the holder's birthday.

CNN: ASIANOW - Asiaweek