屠龍之技的英文：
[Literal Meaning]
slaughter/dragon/aux./art
the art of killing dragons
[解釋]
毫無實用價值。
[Explanation]
meaning something that has no practical value at all.
[例子]
你這次學的.就是屠龍之技，對公司的技術進步沒有任何價值。
[Example]
What you learned this time is the art of killing dragons, which will provide no help for the company's development in technology.
參考例句：
To master the skilled-art of slaughtering dragon
屠龍之技
學識谷
