And we think of these things as especially rare, 我们可能会认为这只是个别现象， but a study by the Wisconsin Children's Trust Fund found that 40 percent of low-income kids face multiple instances of childhood trauma
A compound that has been tested in mice, BMN-111,is useful in preventing the action of the achondroplasia gene. 有一种叫 BMN-111的化合物，经老鼠实验，在抑制软骨发育不全基因方面非常有效。 Achondroplasia is the most common form of dwar
汉字演变英语演讲稿 Today, my topic is changes in Chinese characters. Chinese culture is broad and profound. And I think, Chinese characters are also an important part of Chinese culture. At first, the
