a rough diamond的用法和樣例：
例句
- Mrs.White seems to have a devil of a temper, but she is a rough diamond.
懷特太太看來(lái)脾氣很壞，但她是個(gè)心地很好的人。 - I know he looks a bit of a rough diamond in his tattered jeans, but apparently he does a lot of good work for local charities.
我知道他穿著(zhù)破爛的牛仔褲看上去有些渾金璞玉的樣子，但清楚他是為當地的慈善事業(yè)做了許多有益的工作。
