the opposing sector of the same muscle group.
同一个肌肉群中起反作用的部分。
reciprocal action and reaction.
互起作用的行动和反应。
It produces a degenerative effect.
它起着负反馈的作用。
In this chemical reaction, Cu plays the role of the reducing agent.
这个化学反应中, Cu起到还原剂的作用。
We need an effective Opposition.
我们需要一个能起作用的反对党.
Outer layer such as cornea serves a role to reflect the images.
外层，比如角膜可以起到反光的作用。
feedback in phase with (augmenting) the input.
在起增大作用的输入下的正向相变反
feedback in opposite phase with (decreasing) the input.
在起减少作用的输入下的负向相变反
an oxidoreductase that catalyzes the incorporation of molecular oxygen.
对与分子氧反应起催化作用的一种酶。
They also play an important role in immune reactions.
它们在免疫反应中也起着重要的作用。
and the law of probability is more against us than in our favor.
概率更多的时候起相反的作用。
It lurches from a standstill in a reaction to the movement of the outgoing rock.
它会以投石运动的反作用晃动起来。
In the reaction, the fraction acts as an agent.
在反应中,这些碎片起一种媒剂的作用.
In the second period, though, the effect was reversed.
在第二个时期，竞争却起相反的作用。
For every action there's an equal and opposite reaction.
每一个作用力都会引起相等的和相反的反作用力。
was not at all productive to their work.
对他们的工作效率反而起了消极负面的作用，
This use has been protested, but protests are of little avail against usage.
这种用法曾有人反对，但反对不起什么作用，人们照样这样用。
The water vapor and dust particles also serve to reflect the rays of the sun.
水蒸气及灰尘微粒也起到反射太阳光的作用。