The cause may be physical—the growth of a tumour or hydatidiform mole in the uterus—or emotional.
The cause may be physical—the growth of a tumour or hydatidiform mole in the uterus—or emotional.
产生的原因可能是物理上，或肿瘤的生长，或葡萄胎，或情感上的。
The cause may be physical—the growth of a tumour or hydatidiform mole in the uterus—or emotional.
产生的原因可能是物理上，或肿瘤的生长，或葡萄胎，或情感上的。