a connected series of thoughts
一系列相连的思维 (yi xilie xianglian de siwei)
"I lost my train of thought during the presentation."
"我在演示中失去了我的列车的思维。" (wo zai yan shi zhong shi qu le wo de **lie che de siwei**)
to keep changing your mind about something
people will always have hope, no matter the situation
to suffer the consequences of one’s actions
a decision or opinion has not yet been reached
in the process of being developed or built
to have a casual conversation about unimportant topics