It's a bit like a tennis instructor, says Merzenich, shooting balls at you faster and faster over the course of the summer to keep you challenged.

梅策尼希说这有点儿像网球教练在夏季训练课程中以越来越快的速度向你投球，让你不断受到挑战。

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In the course of these new developments the design of the entire simulator equipment and the Instructor Operating Station (IOS) have been improved and adapted to ergonomic requirements.

在新的开发过程中，整个仿真设备和指令操作站(IOS)的设计经过了改善，满足人类环境改造学的要求。

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The typical language used is: "at the end of the course the instructor hands out an envelope to every participant and the participant pays what they can."

最典型的描述是：“课程结束时，讲师发给每位学员一个信封，学员付他们所能付的。”

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Last year was his fifth year as a co-instructor of the course, Friedl said.

CNN: Cambridge top cop stands by department after Harvard arrest

Mr Haden, who devised the course with the assistance of a former army assault course instructor, told the court that over 20 years about 300, 000 people - half of them children - had used the course with no similar accident.

BBC: South West Wales

She added that as the course instructor concluded that the technique was so obvious that no demonstration was necessary, it was vital she should at least give clear and specific instructions about how to negotiate the pole, so as to control the speed of descent - but she did not.

BBC: South West Wales