Cough medicine like Robitussin or DayQuil acts to suppress your body's natural reflexes.

感冒RobitussinDayQuil会压制你身体的自然反射。

An instrument in which a mirror is automatically moved so that it reflects sunlight in a constant direction.It is used with a pyrheliometer to make continuous measurements of solar radiation.

定日镜一种仪器，装有一面会自动调控的镜子，以便不断朝某一恒定方向反射日光。

If there were any inhabitants of the moon, they would see our earth reflecting the light of the sun, again like a huge mirror hung in the sky. They would speak of earthlight just as we speak of moonlight.

假如亮上有居民，他们也会看到我们反射太阳光的地球同就一个巨大的镜子悬在空中，他们也会我们论光论地球光。