It is of great significance for staffs to grasp knowledge of working principle of various lab instruments and understand acquirement of mending to meet relevant requirements.

论述了实验室管理人员要对实验室各种仪器设备的工作原理的了解，掌握维修技术要求，才能满足工作需要。

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The students in these schools not only need to grasp knowledge on their speciality, but also to possess knowledge on science and culture, and to improve their cultural quality as well.

中等艺术学校的学生，既要掌握扎实的专业知识，又要具备专门的文化科学知识，还要提高自身的社会文化素质。

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Exams should be a method to test whether students grasp the knowledge or not instead of a burden on them.

考试应该是检测学生是否掌握知识的一种方法，而不是成为学生的负担。

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They are really a difficult concept to grasp when you have no base knowledge of it.

当你没有基础知识时，冠词确实很难掌握。

韩国人经常犯的失误 - SpeakingMax英语口语达人

"We can only meet the challenges and grasp the opportunities if we pool our knowledge and expertise and act together, " he said.

BBC: Cancer research

But none of his esoteric knowledge could substitute for the multidimensional grasp of space and form and the strength and clarity with which the tensions and relationships of structure and style are expressed that are the architect's innate, creative genius.

WSJ: Philip Johnson: Short of Attention Span, Long on Aesthetics