There is a 10-foot drop, so be careful.

这里有10英尺的落差，请小心。

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By 1950, though, human activities had started to make an impact. Then, the water level began to drop at a rate of 30 centimeters (about a foot) each year.

到1950年，人类活动开始产生深远影响。那时，水平面开始以每年30厘米的速度下降。

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Then, the water level began to drop at a rate of 30 centimeters (about a foot) each year.

那时，水平面开始以每年30厘米的速度下降。

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As of the last test, the antennas could survive a 5-foot drop, open.

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The roller coaster, made mostly of wood, has an 85-foot drop to start and is followed by several drops and turns.

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But England managed to establish one final attacking position and Wilkinson slotted a right-foot drop-goal to give them some much-needed breathing space.

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