得力助手

• man Friday
• one's right hand
• right-hand man
• right arm
• r.h.

例句

1. 我的长子是我的得力助手。
   My eldest son is my right arm.
2. 要不是我的朋友罗伯特愿意做我的得力助手的话，我可能永远也开不了业。
   I could never have started this business if my friend Robert had not been willing to act as my man Friday.
3. 如果你需要详细的情况，请问斯蒂芬，他是我的得力助手。
   If you require further details ask Stephen, he's my right-hand man.