1. Clear as mud
形容说话或文字表达得一塌糊涂，用来讽刺某人的解释混乱难明，或幽默回应复杂的指示。

"His explanation was as clear as mud."
他我解释非常不清晰。

2. Salt of the earth
形容一个人朴实可靠。

“She do volunteer work every weekend，she is truly the salt of the earth."
她每周也做义工，真是朴实善良的人。

3. On the face of the earth
表示世界上。有强调的语气。

“There's no one like her on the face of the earth."
这世上没有像她这样的人。

4. To break new ground
开创先河的意思。

"This research breaks new ground in cancer treatment."
这项研究在癌症治疗上开创先河。

5. To hold your ground
形容一个人坚守立场，不退让。

"Despite pressure, she held her ground and refused to compromise."
尽管受尽压力，他仍坚持自己的立场绝不妥协。