他们可以将问题旋转以更深入地覆盖不同的区域，同时仍旧保持问题列表的小规模。
They can rotate the questions to cover different areas in more depth while still keeping the list of questions small.
航天飞机的大部分受到一个旋转服务结构的保护，它类似于一个阻挡不良气候的覆盖物，他补充说。
Much of the shuttle is protected by a Rotating Service Structure, a shell-like covering that guards against weather, he added.
预热平底锅的中间部分并加上2勺子油，旋转平底锅以致其底被有覆盖。
Heat a frying pan or wok on medium-high heat and add 2 tablespoons oil, swirling so that the bottom of the pan is coated.
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