Diamond in the Rough——未經雕琢的鑽石

** refers to someone or something whose good qualities are hidden（指隱藏良好品質的某人或某物）；something with unrealized potential（具有未實現潛力的事物）；something coarse on the outside and beautiful on the inside（外表粗糙但內在美麗的事物）

~~未經雕琢的鑽石；尚待塑造的人才；璞玉待琢；外粗內秀的人；非常有潛力的人和事物；外表粗魯但具有優秀潛質可供開發的人

~~ underestimated talent; underrated talent; underappreciated talent; undervalued talent; person full of potential; person with great potential; appearances can be deceiving; latent genius; hidden champion

!!“Diamond in the rough” refers to the fact that an uncut, unpolished diamond resembles a hunk of rock, and does not look attractive or valuable but, after processing, may become extremely attractive and valuable.

“鑽石原石”是指未切割、未拋光的鑽石類似一塊岩石，看起來並沒有吸引力，但經過加工後，可能會變得極具價值。

>> LEEK English Pronunciation Method is surely a diamond in the rough－with some repackaging and marketing it would become one of the most valuable English teaching tool for non-English speaking people.

LEEK英語拼音法無疑是一顆未經雕琢的鑽石——經過一些重新包裝和行銷，它將會成為對非英語母語人士最有價值的英語教學工具之一。

>> Sam, our English teacher, is clearly a diamond in the rough. Her knowledge, enthusiasm, and energy could be so much more effective if we could give her some time.

我們的英語老師森姆是一位尚待塑造的人才，如果我們能給她一些時間，她的知識、熱情和精力可能會讓教學更有效。

學勤進修教育中心英語專科導師

李啟文 教授