经济学人下载:为什么海龟吃塑料垃圾(2)

1.involve 涉及
Any investment involves an element of risk.
任何投资都有一定的风险。
2.deliver 递送
Leaflets have been delivered to every household.
传单已发送到每家每户。
3.chop up 割断
Chop up three firm tomatoes.
拿3个硬西红柿切碎。
4.culprit (造成问题或麻烦的) 原因
The main culprit in the current crisis seems to be modern farming techniques.
当前这场危机的罪魁祸首好像是现代农业技术。