名詞 relaxin:

1. hormone secreted by the corpus luteum during the last days of pregnancy; relaxes the pelvic ligaments and prepares the uterus for labor

re.lax.in

n.（名詞）
A female hormone secreted by the corpus luteum that helps soften the cervix and relax the pelvic ligaments in childbirth.
恥骨松弛激素：由身體卵巢分泌的雌性荷爾蒙，能幫助生產(chǎn)時放松子宮頸并且放松骨盆韌帶