Subject + 开发 + 了 + Object
开发 (kāifā) means "to develop" or "to create," often used when talking about inventing new products, methods, or technologies. It implies a process of exploration and innovation. It can also mean to develop land, resources, or software.
这家公司最近开发了一款新的手机应用。
Zhè jiā gōngsī zuìjìn kāifā le yī kuǎn xīn de shǒujī yìngyòng.
This company recently developed a new mobile app.
科学家正在开发更环保的能源技术。
Kēxuéjiā zhèngzài kāifā gèng huánbǎo de néngyuán jìshù.
Scientists are developing more environmentally friendly energy technologies.
他们花了两年时间开发这个软件。
Tāmen huā le liǎng nián shíjiān kāifā zhè gè ruǎnjiàn.
They spent two years developing this software.