医生指出，患者不断重复他人话语的行为是典型的回声语言症状。

The doctor noted that the patient's constant repetition of others' speech was a clear sign of ___echolalia.

孩子的回声言语现象，即无意识地重复他人的话语，使得交流变得困难。

The child's ___echolalia, where he unconsciously repeats others' words, makes communication challenging.