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vt. 分开
n. 塑料
砍倒
2. We are allowed to cut down trees to build more buildings.
允许
punish vt.
处罚，惩罚
fine vt. 罚款
3. If you are against the traffic rules, you will be punished or even fined.
vt. 限制
用完，耗尽
vt. 导致，产生
4. To limit the air pollution, we should use new types of energy. They will never run out and will produce little pollution.
plastic
separate
recycling
allow
cut down
punish
fine
limit
run out
produce
n. 塑料
vt. 分开，分割
vt.&vi 回收利用，循环利用
vt. 允许
砍到
vt. 处罚，惩罚
vt. 罚款