中孕教育。不适感包括背痛，圆韧带疼痛，便秘及消化不良。

E. Second trimester education. Discomforts include backache, round ligament pain, constipation, and indigestion.

youdao

中孕教育。不适感包括背痛，圆韧带疼痛，便秘及消化不良。

E. Second trimester education. Discomforts include backache, round ligament pain, constipation, and indigestion.

youdao