a drop in the level of the womb during the last weeks of pregnancy as the head of the fetus engages in the pelvis
孕腹轻松(产前数周子宫下降、胎儿头入骨盆所致的感觉)。
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lighteningn.孕腹轻松
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listeningvi.倾听;听信;听从;听;(listen的现在分词)
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lightingn.照明设备;灯光效果;灯光布置