提示：点击例句中的单词，就可以看到词义解释

A day-and-a-half south of budapest I met a very cheerful japanese cyclist coming in the opposite direction .

从布达佩斯往南骑了一天半时间，我遇到了一位从对面骑来的日本车手。

Next , I can put the magnitude of the air resistance in for the force of the cyclist .

接下来我把空气阻力替换成自行车手施加的力。

If you 're approaching another runner or cyclist and need to pass them , let them know on which side you 're trying to pass .

如果你接近前面的运动员或骑自行车的人，并且想要超过他们，要让他们知道你要从哪边超过他们。

If you 're a serious cyclist or know someone who is , you probably know that over the years , the stuff really good bikes are made of has changed .

如果你是一个真正的自行车手或者你认识一个这样的人，你也许知道，这几年制造真正好自行车的材料已经变了很多。

So , at a constant speed the force from the cyclist will have the same magnitude as the air resistance force .

因而在恒定速度的情况下，自行车手施加的力与空气阻力大小相等。