in one train

基本解释

Only one seat in the train was unoccupied but there was a large suitcase on it. "Is this suitcase yours, sit?" asked a commuter.
火车上只有一个座位还没有人坐，可是，上面放着一只大提箱。一位使用长期车票的乘客问道：“先生，这箱子是你的吗？”
In a moving train one feels out of balance , the earth seems to be constantly moving and your mind has only the horizon as a reference, all the others things are constantly in motion.
在一列运动中的火车上，人们感觉不到平衡，大地在不断地移动，在你的脑中只有地平线是参照物，其他所有的东西都在运动。
Today, more than three million train in one hundred fifty countries.
现在，在150多个国家有超过三百万人训练。

The puppeteers train for many years to move as one in bringing the puppet to life to act in complex theater productions.
This is where I grow up in Hiratsuka, Japan Hiratsuka is about one hour by train from Tokyo.
这是日本的平冢,平冢距离东京大约一个小时的火车车程。
麻省理工公开课 - 媒体、教育、市场课程节选
because it's one of the most beautiful train stations in the world, really, I think.
因为我真的认为它是世界上最美的火车站之一。
中央车站的历史 - SpeakingMax英语口语达人

Hyperoxic swim lanes allow swimmers to train in one location at a variety of altitudes, as the lane can be adjusted to simulate different altitudes.
FORBES: Olympic Gold Medalist Rowdy Gaines Leads Fundraising Effort For USA Swimming