Physical touch can bridge the widest of emotional distances .

身体上的接触可以缩小情感的距离。

Americans are used to great distances .

美国人早已习惯了长长的距离。

Even short distances can make a difference .

即使是短距离的变动亦会有所作用。

Can migratory birds carry h5n1 over long distances ?

候鸟会长距离携带h5n1型禽流感病毒吗？

They also exist over longer distances within cities .

它们也存在于城市之间的更长距离中。