And without strength, you cannot protect anything.

没有力量，你什么都保护不了。

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Now, though, a novel type of steel has been developed that resists fractures at much lower temperatures, while retaining its strength and toughness—without the need for expensive additives.

然而现在，一种新型的钢已经被开发出来，它可以在更低的温度下抵抗断裂，同时保持其强度和韧性，而不需要昂贵的添加剂。

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One thing that physiologists have learned is that without gravity our bodies begin to lose strength, leaving astronauts with weakened bones, muscles and cardiovascular systems.

生理学家发现，失去重力后身体会失去力量，这使得宇航员骨质疏松、肌肉松弛，心血管功能也相应退化。

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Collins noted that Gorilla Glass can be molded into curved designs and multiple shapes without losing its strength, and he questioned whether the same could be said for manufactured sapphire.

CNN: Your next phone screen could be made of sapphire

Their authenticity is their strength and without them we could not recall and evidence the past.

UNESCO: Preserving our written heritage

In this video, the firm shows athletes doing balance and strength tests without the bands and then performing better with.

BBC: What are Power Balance bands?