be versed in ; be proficient at
... ly是副词的标志（一般来说），修饰动词 be good at 精通于 be annoyed at 对……烦恼 ...
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... in progress进行中 be versed in精通于 come through穿过; 穿透 ...
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熟悉于、精通于 familiar with
精通于市场询价 Well versed in RFQ
精通寓守于攻 Improved Combat Expertise
精通/善于 good at
这些人是精通于数学，还制作了天堂的地图。
These people were the masters of mathematics and had mapped the heavens.
youdao
至于猪，他们已经精通于阅读和书写了。
As for the pigs, they could already read and write perfectly.
但是，大多数的公司似乎仍然没有十分精通于该领域。
But most companies still don't appear to be well versed in this area.
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