4WD is the written short form of four-wheel drive. It names a system in a car or truck: the engine can send power to all four wheels, not only to the front pair or the back pair.

4WD is the written short form of four-wheel drive4WD是four-wheel drive（四輪傳動）的書面縮寫 It names a system in a car or truck指的是汽車或卡車裡的一套系統 the engine can send power to all four wheels引擎可以把動力送到全部四個輪子 not only to the front pair or the back pair而不只是前面兩個或後面兩個

Most family cars are two-wheel drive. That is fine on a dry city road. On mud, snow, wet grass, or a rough hill, two wheels can spin and go nowhere; four wheels sharing the work can keep you moving.

Most family cars are two-wheel drive大部分家庭房車是two-wheel drive（兩輪傳動） That is fine on a dry city road在乾燥的市區道路上這樣就夠了 On mud, snow, wet grass, or a rough hill在泥地、雪地、濕草地，或崎嶇的山坡上 two wheels can spin and go nowhere兩個輪子可能會空轉、動不了 four wheels sharing the work四個輪子一起分擔動力 can keep you moving就能讓你繼續前進

On some cars you switch 4WD on when you need it. A close cousin, AWD (all-wheel drive), is on more of the time and often feels nearer to a normal car.

On some cars有些車上 you switch 4WD on when you need it你需要的時候才把4WD打開 A close cousin, AWD (all-wheel drive)有個近親叫AWD（all-wheel drive，全時四輪傳動） is on more of the time比較常一直開著 and often feels nearer to a normal car開起來也常常更接近一般轎車的感覺

The letters show up on the back of vehicles, in ads, and in used-car notes. They are a bit technical — not posh, not slang.

The letters show up on the back of vehicles, in ads, and in used-car notes這幾個字母會出現在車尾、廣告，還有中古車的說明裡 They are a bit technical這算是有點技術性的用詞 not posh, not slang不是高級用語，也不是俚語

Shops like to stamp 4WD on any tall, tough-looking car. A high body is not the same as power going to all four wheels.

Shops like to stamp 4WD店家喜歡把4WD標籤貼 on any tall, tough-looking car在任何看起來高大、粗獷的車上 A high body is not the same as power going to all four wheels車身高不等於動力真的送到全部四個輪子