柯林斯詞典lightening /?la?t?n??/ 1. N the sensation, experienced by many women late in pregnancy when the head of the fetus enters the pelvis, of a reduction in pressure on the diaphragm, making it easier to breathe 胎兒下降感; 許多女性在懷孕晚期經(jīng)歷的胎兒頭部進(jìn)入骨盆的感覺[obstetrics] 返回 lightening