sometimes people pollution the enyironment什么意思?

pol. pol. pol. pol. Sometimes people pollute the environment. Sometimes people pollute the environment. 什么是POL POL是什么意思? /pol'是什么意思 pol是什么意思 POL是什么 G______ songs sometimes make people feel blue old people are sometimes very _.(forget) Sometimes some people have s______dreams at night. sometimes people pollution the enyironment什么意思? Sometimes people pollute the environment.划线提问 why do people sometimes feel empty? pol是什么国家