Microorganisms multiply rapidly in dirty places and in warm temperatures. This means that people should never touch food with dirty hands or put food on unwashed surfaces.
微生物在脏的温暖的环境下繁殖迅猛,这便意味着我们不要用脏手触摸食物,也不要把食物置于未清洗的物体表面。
When you become pregnant your body produces a surge of the hormone estrogen. This causes the cells in the breast to multiply rapidly in the first half of the pregnancy.
当你怀孕时,身体会产生一大批的荷尔蒙雌激素。
Mosquitoes multiply rapidly in summer.
蚊子在夏天繁殖得很快。
This causes the cells in the breast to multiply rapidly in the first half of the pregnancy.
在你孕期的前半阶段,这将导致乳腺中的细胞迅速增加。
Some kinds of viruses cause cells to multiply rapidly and produce cancer. Other kinds of viruses, or a combination of several different kinds, cause the common cold.
某些种类的病毒使细胞迅速繁殖并产生癌。其它种类的病毒或者几种不同种类病毒的结合引起普通感冒。
The bacteria multiply rapidly within the tetraploid cells and become surrounded by a membrane synthesized by the host plant.
细菌在四倍体细胞中快速繁殖,并逐渐被宿主植物合成的膜所包围。
Malaria parasites multiply rapidly in the liver and then in red blood cells of the infected person.
疟原虫在肝脏和随后在被感染者的红血球中迅速繁殖。