We need to keep the environment clean.
We need to make our city more beautiful.
***猫迷英语专家团提供【Real.American.English.】不是需要need，用should可以翻译吗need 也有应该的意思。如果非用should不可。就把need to换掉即可。那不就两个动词了吗We should keep the environment clean.We should make our city more beautiful.高楼随处可见怎么翻译Tall buildings can be seen everywhere.There are lots of building everywhere。对吗building后面加s，因为是复数。高楼 tall buildingsThere are lots of tall buildings everywhere。可以的。