306.Moods should be distinguished from emotions which are usually more intense, retated to specific circumstances, and often conscious.
本句的主干是moods should be distinguished from emotions。其中，which are usually more intense, related to specific circumstances, and often conscious是限定性定语从句，修饰先行词emotions。
短语be distinguished from意为“与……区别开来”。如:
The true is to be distinguished from the false.真实应与虚假相区别。
Actually Lily didn't understand the question which was asked in Chinese.事实上，莉莉没有听懂用中文问她的那个问题。
He said he had been admitted by the college, which was not true.他自称已经被大学录取了，那是在撒谎。