有时候我感觉到她只不过是在进行长途旅行——但是想到她不会再回来的时候我又恐慌不已。

At times I simply feel she's just on a long trip-and am jolted to realize it's one she's not coming back from.

youdao

在20世纪，飞机代替了火车进行长途旅行。

In the 20th century, airplanes replaced trains for long distance travel.

youdao

只有那些有办法传播到这些岛屿的物种才能进行长途旅行，各种因素在起作用，导致岛上新殖民者的多样化组合。

Only those species with ways of spreading to these islands were able to undertake the long journeys, and the various factors at play resulted in diverse combinations of new colonists on the islands.

youdao