As a boy, he was very smart and he was very interested in science.

孩童时期,他就很聪明,并对科学有着浓厚的兴趣

耶鲁公开课 - 欧洲文明课程节选

There was a boy in that class who was a great hacker and I know he can hack things very quickly.

班上有个男孩，是一个很厉害的黑客，可以迅速地入侵系统。

理想是当密码专家 - SpeakingMax英语口语达人