Firmly press downward to seat seal on flange.

稳固地向下压将座椅密封压入凸缘中。

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When we inhale, our lungs fill with air, which press the diaphragm downward.

当我们吸气时，我们的肺会充满空气，空气会把隔膜往下压。

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What exactly causes them? When we inhale, our lungs fill with air, which press the diaphragm downward.

究竟什么引起岔气?当我们吸气时，我们的肺会充满空气，空气会把隔膜往下压。

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During a press conference, Federal Reserve Chairman Ben Bernanke said QE3 should put downward pressure on mortgage rates, helping the housing market.

FORBES: With QE3, How Low Will Mortgage Rates Go?