be proficient at

基本解釋

Conclusion:Laparoscopic total hysterectomy is safe and feasible, but operators must be proficient at the suturing techniques under laparoscopy.
結(jié)論：腹腔鏡下全子宮切除術(shù)安全、可行，但必須掌握熟練的鏡下縫合技術(shù)。
The complexity is rapidly reaching a point of critical mass, where one single developer can no longer know everything needed to be proficient at his or her job.
復(fù)雜性迅速地到達(dá)一個臨界點(diǎn)，即一個單獨(dú)的開發(fā)者已經(jīng)不能精通他或她工作中的方方面面了。
Statistically, an astronaut is more likely than the average person to be proficient at playing an instrument. There are a few instruments on board and the occasional jam session will happen.
空間站里有一個業(yè)余無線電系統(tǒng)，在合適的時間，設(shè)備正常的情況下，地上的任何人都可以與他們通話。

You have to be extremely proficient at electricity, at computerized controls.
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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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Back in his Stanford laboratory, Khosla admits that he has a way to go before his approach can be as proficient at churning out druglike compounds as automated chemistry robots.
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