1.n.科学家。
2.Scientists are still a long way off finding a cure. 科学家要找到一个治疗方法,还远着呢。
3.Scientists continue to push back the boundaries of human knowledge. 科学家不断扩大人类知识的范围。
4.The scientists are taking water samples from the river. 科学家正从河中采水样。