科学家们一直在研发新药物。

Scientists are ___developing new drugs all the time.

这家公司正在花费6.5亿英镑开发新产品。

The company is spending $650 million on ___developing new products.

有了更多空闲时间，我们可以开发新技术，更多地了解自己和周围的世界。

With more free time we can ___develop new technology, learn more about ourselves and the world that surrounds us.