摘要
[重点词汇]1.throw litter into the river把垃圾扔入河中2.play a part in cleaning it up尽一份力把它清理干净3.fill the air with black smoke空气中充满黑烟4.cut down air pollution减少空气污染5.make a difference产生影响6.shark fin soup鱼翅汤7.at the top of the food chain处于食物链的顶端8.in the last 20 to 30 years在最近的20到30年间.
出处
《中学生英语》
2023年第3期34-34,共1页
English Journal for Middle School Students
