low gear

基本解释

He shifted into low gear. The two vehicles began to decelerate.
他换上低速档，两辆车开始减速了。
This means that in emergency situations or sudden deceleration, the transmission can quickly step down to LOW gear .
这意味着在紧急情况或突然减速时变速器能够快速的降到低齿轮。
Bruce went into a low gear and drove at a terrifying speed, keeping the front wheels astride the crack as he followed its zigzag course.
布鲁斯挂上慢档，把两只前轮分别搁在裂缝的两边，顺着弯弯曲曲的裂缝，以发疯的速度向前开去。

Imagine barreling through the Amazonian rainforest with machetes flailing from the windows of your off-road rig, and just as you're about to kick the vehicle into low gear, you pause to consider the impact of your vehicle's exhaust (among other things) on the delicate ecosystem around.
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Wal-Mart (PDF flier) - lots of crappy low end gear and not-so-good deals on HDTVs.
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