be proficient in

基本解释

Sure, physicists have to be proficient in mathematics, but the main thing is to have that curiosity and drive.
当然,要精通数学,但最主要的是具备那样的好奇心和动机.
There is no doubt at all that we need our students to be proficient in the languages of the world as well as in the language of numbers as of computer languages.
毫无疑问，我们需要学生精通世界语言，同样也要熟悉数字语言和计算机语言。
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There are a number of dimensions to effective communication, and the architect needs to be proficient in all of them.
有效沟通的方式有许多，架构师必须精通所有。

Candidates must be proficient in reading and writing the language of instruction in the proposed country of study.
UNESCO: Sources
But to be fully proficient at making an omelet from the leftovers in your fridge, you need to grasp the finer points of seasoning, timing and creative thinking.
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In order to build a network that is effective for your startup, I believe it is important to first be conscious of which parts of your business you are proficient in and which parts require some guidance and then take an active role in seeking mentors who have those particular skill sets.
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