When John's wife and his mother quarrelled, he was between the beetle and the block. 约翰的妻子和母亲吵架时,他两面不好做人。
Similarly, the unborn baby also could be seen as foreign by the mother's immune system, but she produces other types of glycoproteins that likely block any type of immune response in the womb. 同样,未出生的婴儿也可被母亲的免疫系统视为外来物,但她产生其他类型的糖蛋白,这可能会阻止任何类型在子宫里的免疫反应。
Because my mother was the block watch captain. 因为我妈是社区监视组长。
Ok my mother asked me to take an umbrella block the sun, can now is not used to cover the sun but I was used to block rain. 还好我妈妈叫我带了伞挡太阳,可现在不是用来遮太阳了而是被我用来挡雨的。
Beta-estradiol, the mother's sex hormone, can block this effect while the baby is in the womb, but such protective effects are absent after birth. 当胎儿在母体内,雌性激素&β-雌二醇可阻止这种作用的发生,而当胎儿出生后这种保护作用就不再有了。
Scholars are concerned about the study on the mechanism of mother-to-infant transmission of HBV and the protective measure to block up the vertical transmission. 研究HBV母婴传播机制及其预防措施是国内外学者所共同关心的问题。