黄体期

luteal phase (period in the menstrual cycle when an embryo can implant in the womb)

body / form / style / system / substance / to experience / aspect (linguistics)

variant of 期[qi1] / period / cycle

a period of time / phase / stage / classifier for issues of a periodical, courses of study / time / term / period / to hope / Taiwan pr. [qi2]

yellow / pornographic / to fall through

corpus luteum (glands in female mammals producing progesterone)