There are unique considerations when it comes to urban farming, Wally says: He can't grow crops that will get too tall, or else they will absorb too much pollution.
当谈到市区种植时，有个特别的问题，Wally说他种的农作物不能长得太高，否则它们会吸收太多的污染。
I think we should discourage people from using their private cars. They produce too much pollution!
我觉得我们应该劝人们尽量少开私家车。汽车制造的污染太严重了！
Too many cars, too much pollution!
太多的车，太多的污染！
Yes, there's too much pollution too!
空气污染也太严重了！
Mary:Yes, there's too much pollution too!
空气污染也太严重了！
Mary:Yes, there's too much pollution too!
空气污染也太严重了！
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