Martin Haemmig speaks English, German and French at a proficient level.

马丁。汉明博士精通英语，德语和法语。

youdao

At the Proficient level solutions start to "just appear", usually fully-formed, in the person's mind.

在熟练期，人的思想中开始使用知觉、直接的反应，通常是成型的。

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It found, for example, that in elementary schools, about 79 percent of girls could read at a level deemed "proficient," compared with 72 percent of boys.

比如，它发现，在小学，大约79%的女孩阅读水平被认为“熟练”，而男孩却只有72%达到这个水平。

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The goal is for all students to perform at the proficient or advanced level.

VOA: special.2011.02.03

However, by the time they reach middle school, only 32% are at or above a proficient level in math, according to the 2007 Nation's Report Card by National Assessment of Educational Progress, and they fall behind internationally.

FORBES: Magazine Article

The average scores were categorized at each grade level into four groups: below basic, basic, proficient, and advanced.

CNN: Report card shows U.S. students need to improve math skills

By third grade, children from low-income families who are not reading at grade level are six times less likely to graduate from high school than students who are proficient.

WHITEHOUSE: The White House