当你参观这个健身房时，确保它的员工可以回答你的问题，做出示范动作，并向你展示如何使用这些设备。

When you visit the gym, make sure there are staff members available to answer your questions, demonstrate exercises or show you how to use the equipment.

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一周以后，弗莱契对一班新学员讲授高速飞行的原理时在作示范动作。

It happened just a week later. Fletcher was demonstrating the elements of high-speed flying to a class of new students.

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她用动作示范正确的技术。他会跟着学。

She would pantomime the proper technique. He would follow.

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