1959年,顾成功研制出第一种脊髓灰质炎活疫苗。
In 1959 Gu succeeded in developing the first polio live vaccine.
经过一年的研究,该团队成功研制出了一种重力驱动的洗手机。
After a year of research, the team came up with a gravity-driven hand-washing machine successfully.
作为一名伟大的中国科学家,袁成功研制出了“杂交水稻”,其产量可提高30%。
As a great Chinese scientist, Yuan successfully developed what is known as "hybrid rice" which can produce up a 30% higher output.
Why is it difficult in some cases to produce a vaccine when we've been successful in so many others?
为什么某些疾病的疫苗很难研制,即使我们已经成功生产了很多种疫苗
应用推荐