Even though computer screens don't give off radiation, the strain from staring over long periods of time can cause harm to your vision.

尽管电脑屏幕没有辐射，长时间地盯着它看也会造成紧张，从而有损视力。

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A basket at the front operates as a shopping trolly, while an optional seat and electric power mode takes strain off users when they are less able to walk.

前面的篮子作为购物小车，同时可选座椅和电动模式为不能走路的用户提供便利性。

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Even though computer screens don't give off radiation, the strain from staring over long periods of time can cause harm to your vision, though many effects are temporary.

固然电脑屏幕不会发出辐射，但是长时间注视的紧张度会伤害视力。

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He added the solution lay in investing in community services to take the strain off hospitals.

BBC: Full hospitals creating potential danger, analysis says

When the flu spreads person to person, instead of from animals to humans, it can continue to mutate, making it a tougher strain that is harder to treat or fight off.

CNN: U.S. prepares for possible swine flu epidemic as global cases rise

Northampton's pre-match preparations were hampered when England call-up Courtney Lawes failed to recover from a minor groin strain, so Neil Best was promoted off the bench to start at blind-side flanker.

BBC: Northampton 34-0 Perpignan