主流zhǔ liú
main stream (of a river)二氧化碳èr yǎng huà tàn
carbon dioxide CO2保卫bǎo wèi
to defend, to safeguard保障bǎo zhàng
to ensure, to guarantee, to safeguard倡导chàng dǎo
to advocate, to initiate, to propose倡议chàng yì
to suggest, to initiate, proposal冲击chōng jī
an attack, under attack, a shock制止zhì zhǐ
to curb, to put a stop to, to stop