设两台摄像机水平放置 Set up two cameras horizontal ; located two cameras placed level ; Based two cameras positioned horizontally
加里卜与格拉芙制定了一项任务：仅利用风能，将一个水平放置的4.5米高石柱提至与地面垂直。
Gharib and Graff set themselves the task of raising a 4.5-meter stone column from horizontal to vertical, using no source of energy except the wind.
请将机器水平放置以防损害机器。
Please place the device horizontally to prevent device being damaged.
将中央扬声器稳固地放在电视机顶部，务必使其完全水平放置。
Set the center speaker firmly on top of the TV set, making sure it is completely level.
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