1.A letter of introduction will ensure you an interview.
凭一封介绍信准保会接待你。

重点词语：ensure vt.保证
商务用语：ensure safety 保证安全
ensure sb. against/from danger 保护某人免受危险

2.The agreement shall enter into force upon signature.
协定于签字后立即生效。

重点词语：enter n.输入；记账  vi&vt.进入；加入；参加
商务用语：enter into a contract 订立合同
enter a profession 就业

3.You have the necessary equipment for leadership.
你具备领导才能。

重点词语：equipment n. 设备，配备；设备，仪器，船上用具
商务用语：laboratory equipment 实验室设备
equipment and parts 器材

4.He changed his pounds for the equivalent amount of dollars.
他把英镑换成了等值的美元。

重点词语：equivalent n.相等物；等价物；等量物
商务用语：absolute equivalent 绝对等同成分
air equivalent 空气等量

5. Example is better than precept.
（谚）以身作则胜于口头训诲/身教重于言传
 
重点词语：example n.例子；榜样；借鉴
商务用语：a typical example 典型例证
make an example of sb. 惩一儆百