On stormier lakes, they made stronger bases for the pilings by placing square log frames on the lake bottom.

在风浪较大的湖上，他们在湖底放置方形木料框，给木桩奠定更加坚实的基础。

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They would drive long poles into the lake bottom within these frames, and then build their houses on these long poles.

他们在这些框内，向湖底打进长木桩，然后在长木桩上修房。

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With this method applied the separation of the AM sine pulse from the ideal chaotic signal and from the measured reverberation of the lake bottom are implemented.

应用该方法对理想混沌信号与调幅正弦脉冲进行分离以及对实测的湖底混响与调幅正弦脉冲进行分离。

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He finally saw her, a big black shadow moving slowly near the lake's bottom.

FORBES: In Search Of Sowbelly

One of the largest flooded cavities in the world (the lake at the bottom is estimated to be 70m deep), this cavernous subterranean space was only discovered by locals in 1924.

BBC: Livin�� la vida Bonito

Pipes have now been put in place in Lake Nyos and nearby Lake Monoun to siphon water from the lower layers up to the surface and allow the CO2 at the bottom of the lake to slowly bubble out, preventing a repeat of 1986 tragedy.

BBC: 1986: Hundreds gassed in Cameroon lake disaster