Pregnant women who are heavy drinkers risk damaging the unborn foetus.孕妇酗酒可能会危及腹中胎儿。They will affect generations of Britons still unborn.他们将会影响还未出世的好几代英国人。A lack of oxygen may inhibit brain development in the unborn chil...
The two biologists found, to their surprise, that both groups of birds survived equally well.这两位生物学家惊奇地发现，两组鸟都很好地存活了下来。This substance has now been cloned by molecular biologists.该物质现在已被分子生物学家克隆。The biologists are studyin...