The recurring boy and girl watching a garbage truck lift a trash bin on a clean neighborhood street.

Big question

为什么垃圾车要把垃圾收走？

Wèishénme lājīchē yào bǎ lājī shōu zǒu?

Why do garbage trucks pick up trash?

垃圾车把垃圾收走，是为了让我们的家和街道更干净、更安全。

Lājīchē bǎ lājī shōu zǒu, shì wèile ràng wǒmen de jiā hé jiēdào gèng gānjìng, gèng ānquán.

当我们用完包装纸、吃东西掉下来的小碎屑，或者坏掉的东西以后，垃圾就要被带到别的地方去。垃圾车会来把它们运走，这样街上才不会越堆越多。后来，垃圾会被送到专门处理垃圾的地方，再分类、掩埋，或者用别的方法处理。

Dāng wǒmen yòng wán bāozhuāngzhǐ, chī dōngxi diào xiàlái de xiǎo suìxiè, huòzhě huài diào de dōngxi yǐhòu, lājī jiù yào bèi dài dào bié de dìfang qù. Lājīchē huì lái bǎ tāmen yùn zǒu, zhèyàng jiē shàng cái bú huì yuè duī yuè duō. Hòulái, lājī huì bèi sòng dào zhuānmén chǔlǐ lājī de dìfang, zài fēnlèi, yǎnmái, huòzhě yòng bié de bànfǎ chǔlǐ.

垃圾车开过来的时候，你会先注意到它的什么声音，或者什么部分呢？

Lājīchē kāi guòlái de shíhou, nǐ huì xiān zhùyì dào tā de shénme shēngyīn, huòzhě shénme bùfen ne?

Garbage trucks pick up trash so our homes and streets stay cleaner and safer.

When we are done with things like wrappers, crumbs, or broken stuff, the trash has to go somewhere. Garbage trucks come to carry it away so it does not pile up on the street. Then the trash can be sorted, buried, or changed in special places that handle waste.

What sounds or parts of a garbage truck do you notice first when it comes by?