To play a lone hand

• 单枪匹马地干

To play a lone hand的用法和样例：

例句

1. The profession of intelligence is a solitary one.
   情报这个职业是单枪匹马的职业。
2. I want to impress Waggett with the fact that I am not playing a lone hand in this matter.
   我要瓦格特明白我并不是单枪匹马一个人在干这事。