所以，Williams和他的同事不得不开发自己的测试程序。

So Williams and his colleagues have had to develop their own test software.

youdao

拉萨的土地价格非常高，而不开发它们表明我们非常珍视拉萨的生态环境，"他说。

The price of land is very high in Lhasa. That we don’t develop the area shows how much we value the environment in Lhasa,” he said.

youdao

拉萨的土地价格非常高，而不开发它们表明我们非常珍视拉萨的生态环境，"他说。

The price of land is very high in Lhasa. That we don't develop the area shows how much we value the environment in Lhasa,” he said.

youdao

So if you could make a hepatitis B vaccine that didn't require a shot or that didn't require refrigeration, that would be a tremendous advance in spreading that vaccine through the world.

所以如果你可以开发出这样的乙肝疫苗,它不需注射就能接种,或者不需要冷藏,这样的巨大进步,能够将疫苗的使用普及至全世界

耶鲁公开课 - 生物医学工程探索课程节选

Not everybody had to be involved in creating food, and so that gave people more time to trade, to develop other products, to be involved in non-food pursuits and many, many more things.

不需要所有人都忙于制造食物,因此人们有空进行贸易,开发其它产品,以追求其他更多,而不单单是食品

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选