But the FBI disagreed, and the two sides bickered about the importance of the document drop.

但是联邦调查局不同意，双方争执不下的是有关文件的重要性。

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This added resistance causes the waveform frequency to drop, lowering the pitch of the sound you hear internally and creating a sort of feedback effect that stimulates the eardrum from both sides.

声波降调的可能性增加，并且随着鼓膜双次振动带来的反馈效应，音高也会随之降低。

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The statement comes amid a large recall of baby cribs designed with so-called drop-sides.

他在大规模召回带所谓下拉式护栏婴儿床时发表了这个声明。

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The runway is built on a flat stretch of land on a hill, with a sheer drop on both sides.

VOA: standard.2010.05.23

They share safety features such as fixed sides and a lower front rail height 32 to 36 inches from the floor, compared with roughly 42 inches for the old drop-sides to enable parents to pick up a baby easily.

WSJ: Manufacturers Discuss Safety Features of the 'Modern' Crib

Its magnesium alloy case and shock-mounted flex-connect hard drive allow it to handle up to a 30-inch drop to six sides, as well as a 12-inch drop from 26 angles.

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Drop-down sides, linked to at least 32 infant deaths since 2000, will be prohibited.

WSJ: When a Cuddly Crib Puts the Baby in Danger