大多数巨蚓的生殖是正常异体受精.Most megadrile earthworms reproduce by normal cross - fertilization.异体间器官移植要特别注意排异反应.You should pay attention to rejection reactions when transplanting an alien organ.短期内, 那些变异体就会在以后的爆发中起主导地位.In short ord...
The argument often halts and sometimes breaks down completely.论据错误百出,有时根本站不住脚.He never halts in his speech.他说话从不吞吞吐吐.He halts between two opinions.他对这两种意见犹豫不决....