心理防線

psychological barrier

heart / mind / intention / center / core / CL:顆|颗[ke1],個|个[ge4]

psychology / mentality

texture / grain (of wood) / inner essence / intrinsic order / reason / logic / truth / science / natural science (esp. physics) / to manage / to pay attention to / to run (affairs) / to handle / to put in order / to tidy up

to protect / to defend / to guard against / to prevent

defensive line or perimeter / CL:道[dao4]

thread / string / wire / line / CL:條|条[tiao2],股[gu3],根[gen1] / (after a number) tier (unofficial ranking of a Chinese city)