an event at which a lot of people come together to write or improve computer programs

Facebook marked its sixth birthday by holding an all-night hackathon to develop new software. 脸书举办了一场通宵黑客马拉松来开发新软件，以此纪念自己的六岁生日。

At hackathons scores of programmers converge to solve software problems. 在黑客马拉松上，数十名程序员聚集在一起解决软件问题。