汽車冒煙 (Qìchē mào yān)
smoke from cars
回收 (Huíshōu)
recycle
减少(Jiǎnshǎo)
reduce
自然災害 (Zìrán zāihài)
natural disasters
試車 (Shìchē)
electric car
土石流 (Tǔshíliú)
landslide
重複使用 (Chóngfù shǐyòng)
reuse
溫室效應 (Wēnshì xiàoyìng)
Greenhouse effect
颱風 (Táifēng)
typhoon
砍伐森林 (Kǎnfá sēnlín)
deforestation
全球暖化 (Quánqiú nuǎn huà)
Global warming
工廠冒出的煙霧 (Gōngchǎng mào chū de yānwù)
smoke from factories
植樹 (Zhíshù)
plant trees
乾旱 (Qiánhàn)
drought
洪水 (Hóngshuǐ)
flood