树木排出氧气，吸收二氧化碳。

Trees give off oxygen and absorb carbon dioxide.

Source: Tatoeba

Sentence Composition

1 树木 shùmù tree
2 排出 páichū to discharge
3 氧气 yǎngqì oxygen
4 吸收 xīshōu
  1. to absorb
  2. to assimilate
  3. to ingest
  4. to recruit
5 二氧化碳 èryǎnghuàtàn carbon dioxide CO2