Its tentacles can extend 165 feet (50 meters) below the surface, although 30 feet (10 meters) is more the average.

它的触须能伸展到水下165尺（50米），尽管一般来说它们只能伸展30尺（10米）。

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Long life more maintenance work is no less epoxy want to avoid sharp things scratch the floor surface, maintenance, cleaning, etc. are to extend the service life of the epoxy method regularly.

想要环氧地坪的使用寿命更加的长保养工作是不能少的，避免锋利的东西划伤地坪表面，定期进行养护、清洗等都是延长环氧地坪使用寿命的方法。

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Therefore, the surface of stainless steel must be regularly cleaned and maintained in order to maintain its gorgeous surface and extend the service life.

因此，对不锈钢表面必须进行定期的清洁保养，以保持其华丽的表面及延长使用寿命。

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NASA scientists hope to extend their search for water as deep as five meters beneath the surface of the moon.

VOA: special.2009.09.30

Lava flows extend for hundreds of kilometres across its surface.

ECONOMIST: Planetary science

"Landsat is a centerpiece of NASA's Earth Science program, and today's successful launch will extend the longest continuous data record of Earth's surface as seen from space, " NASA Administrator Charles Bolden said in a statement.

CNN: NASA cheers new Landsat launch

If approved by Lancashire County Council the well will be 8.5in (22cm) in diameter and extend approximately 1km from the current vertical well, more than a mile beneath the surface.

BBC: Fracking firm Cuadrilla plans new well at St Annes site