No one knows why a fetus is not automatically rejected by the mother’s immune system.没有人知道为什么母亲的免疫系统不会自动排斥胎儿。Modern medical technology like type-B ultrasonic checks can reveal the fetus gender.现在的医疗仪器例如B超是可以分辨出胎儿的性别的。Gro...
We moored in the estuary, waiting for high tide.我们在港湾停泊, 等待涨潮.Moor a ship to a dock; a dirigible moored to a tower.把船系在码头上; 系泊在塔上的飞艇.She had moored her barge on the right bank of the river...她把驳船停泊在河右岸。His twenty-five-fo...