arousal
sexual excitement
性欲激起
Physiological changes take place during sexual arousal.
在性欲激起期间会发生生理变化。
Pain during intercourse can be caused by lack of arousal.
性交过程中的疼痛可能是由于性欲未激起而引起的。
libido
a person's sexual desire
性欲,性冲动
Symptoms include weight gain, sleep disorders and loss of libido.
症状包括体重增加、睡眠失调以及性欲消失。