1·Earth Day, Environmental Laws, Environmental Issues in the news, being green was entering the mainstream.
想一想世界地球日，环境法，新闻中的环境问题，不难看出环保行动正在成为主流。
2·Tomorrow is Earth Day. Let's discuss what we can do to recycle things.
明天是地球日。让我们讨论一下可以做什么来回收东西。
3·Many people are playing a role in saving the earth on Earth Day.
许多人都能在地球日为拯救地球奉献一份力量。
4·The Earth Day was created to remind people to care about the earth.
设立地球日是为了提醒人们要关心地球。
5·On April 22nd, people around the world would celebrate Earth Day in different ways.
4月22日，世界各地的人们将以不同方式庆祝地球日。
6·This year is the 49th Earth Day and I think we should call on people not to cut down too many trees.
今年是第49个地球日，我认为我们应该呼吁人们不要过度砍伐树木。
7·Some environmental protection groups believe that humans will understand the true spirit of Earth Day and try their best to protect the earth.
一些环保组织认为，人类会理解地球日的真正意义，并尽最大努力保护地球。
8·Did you come to the organic food festival we had to celebrate Earth Day?
你来参加我们为庆祝地球日而举办的有机食品节了吗？
9·Our teacher told us about projects other classes had done for Earth Day, and she asked for suggestions for our class projects.
我们的老师给我们讲了其他班为地球日做的项目，并就我们班的项目征求了我们的建议。
10·Earth Day remains truly global!
“地球日”仍然是名符其实的全球性纪念日！