A country's production of sulphuric acid is a good indication of its industrial might, because at some stage nearly every manufactured good comes into contact with this highly corrosive stuff.

一个国家的硫酸产能是其工业能力的良好指针，因为在某些阶段，几乎各个制造行业都要用到这种高度腐蚀性的原材料。

youdao

The single most important public health priority at this stage is to warn people about the dangers of close contact with sick or dead birds infected with H5N1.

目前一项最重要的公共卫生重点是告诫人们有关密切接触受染h5n1型病毒而患病和死亡的禽类的危险。

youdao

At one stage the probe lost contact with Earth for seven weeks, a glitch that added three years to its space voyage.

有一段时间探测器与地球中断联系了好几周，另一个故障则导致了它的空间探测旅程增加了三年时间。

youdao

Today they have contact lenses that can overlay information that are probably at the nine pixel stage right now.

FORBES: Talk With A VC: SoftBank's On Mobile Ads And Wearable Computing

It was Wariner who had looked the likely winner at the mid-race stage before Benjamin and Washington made their moves, but Benjamin said the contact made no difference to the outcome.

BBC: SPORT | Athletics | Benjamin smashes personal best