He seemed fond of her in a strictly professional way.
他似乎只是出于职业缘故而喜欢她。
I'm a novice at these things, Lieutenant. You're the professional.
中尉,做这些事情我是新手,你是行家。
Support for monogamy and marriage was strongest among the professional classes.
专业人士阶层最支持一夫一妻制。