react by

When the sun comes out, the flowers react by opening.

当太阳出来的时候, 花以张开的形式作出反应.

The objects are categorised by different colours, so the vehicle knows it should react to them and how far to steer clear.

这些物体按照不同颜色分类，因此无人驾驶汽车知道该对它们作出反应，以及该从多远避开。

The iron content in Cr plating solution is determined with spectrophotometric method by using Tiron ( catechol sodium disulfonate) as reagent, which can react with Fe~ ( 3+) ions in weak acidic solution and form blue complex.

本文用钛铁试剂作试剂，利用它和三价铁在弱酸性溶液中生成稳定的蓝色络合物，用光度法测定镀铬溶液中铁杂质的含量。

By gravitation the sun and planets act and react upon one another.

太阳与行星通过引力发挥作用并相互影响.

And you should react by selling the stock and cutting the loss.

你应该作出行动,出售股票及时止损.

They react by providing what the fans ask for.

他们做出了满足粉丝们要求的回应.

She worked out that, if the left hemisphere was staying alert to keep guard in a strange environment, then it would react to the irregular beeps by stirring people from sleep and would ignore the regularly timed ones.

她发现，如果大脑左半球在陌生的环境中为了防卫而保持警觉，那么它会对这种不规律的蜂鸣声有所反应，从而把睡眠中的人弄醒，但是会忽略定时响起且音调不变的蜂鸣声。

They react by adding other chemical agents at the double Bond to form derivatives or polymers.

这些化合物的最大用途在于双键与其它化学物质的反应.

Sometimes I want to react by sleeping on a separate bed.

有时候我想要以分床睡的方式作出回应.

If you touch a hedgehog it will react by curling into a ball.

如果你触摸刺猾,它会以卷缩成球的形式作出反应.