Definition: the connection between different events or different parts of a story or discussion Level: C2
到那时，我已经失去了对话的线索。
By that point I'd lost the ___thread of the conversation.
在整个小说中，一丝微妙的讽刺线索连接着各个情节。
Throughout the novel, a subtle ___thread of irony connects the various episodes.
