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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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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The abraded surface shall extend at least 25mm (1 inch) beyond the coated area.

磨面应至少扩展到涂敷区域外25毫米(1英才)。

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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