in train

基本解释

Sensible changes of this kind are already in train in Europe and America.
這種明智的改變已經在歐洲和美洲準備就緒。
Using tools like this one to obtain bone marrow, the most nutritious part of a carcass, they set in train an ancient virtuous circle.
通過使用類似這工具來獲取骨髓這種動物軀躰中最有營養的部分，他們開始培養起一個古老的良性循環。
According to one survey, nearly two-thirds of young women say they have been touched inappropriately in train or underground carriages.
根據一項研究調查，大約三分之二的年輕女子稱她們曾在火車或者地鉄車廂裡被人摸過。

Earlier this week, Kasab took lawyers by surprise when he changed his plea to guilty and admitted that he sprayed gunfire at Mumbai's main train station after arriving in the city from Pakistan with other nine other gunmen.
But suppose you are in a train and you're moving past me and you look at this piece of chalk.
但假如你在火車上,從我麪前駛過,你看著這支粉筆
耶魯公開課 - 基礎物理課程節選
they were thrilled to see the subway station, the train station because they notice right way it didn't look like the train station that they are familiar with and they could see the little shops in the background.
孩子們看到地鉄，和火車站的時候很高興,因爲他們立刻意識到,這裡的火車站,和他們的所熟悉的火車站不一樣,他們能看見背景裡的小商鋪。
麻省理工公開課 - 媒躰、教育、市場課程節選

The subject reported the encounter, setting in train the investigation that led to Mr Simm's arrest.
ECONOMIST: A sensational arrest inside Estonia’s defence ministry