1. extend vt. 延伸; 扩大
例句:This will extend the life of the drive.
这样会延长驱动装置的寿命。
2. permit vt.许可,准许
例句:He did not normally permit himself the indulgence of sentiment.
他一般不允许自己陷入感情的罗网。
3. terrorist n.恐怖主义者,恐怖分子
例句:He was shot by a terrorist with a machine-gun.
他被恐怖分子用机关枪打死了.
4. explosion n.爆炸,炸裂
例句:The population explosion is accompanied by a population implosion.
人口爆炸还伴随着人口爆聚。
5. assist vt.帮助; 援助
例句:Do you need anybody to assist you in your work?
你需要人帮助你工作吗?