"It is kind of hard to believe sometimes when I look at his work to realize that one sheet of paper goes into each of the animals with all of the complexities."

VOA: standard.2010.03.17

I mean, they have no idea how hard we work, and look at this gigantic split infinitive, to dramatically help.

他们不知道我们有多么努力地工作，注意到这之间的巨大鸿沟，会有很大的帮助。

麻省理工公开课 - 固态化学导论课程节选

So I just sit in there and work on, work on the sounds that are hard for my English tongue to produce.

有一些和英语发音不同的地方让我感到很难，我会长时间地练习这些发音。

想学好英语吗？ - SpeakingMax英语口语达人

why did I work so hard in order to get into this place?

我为什么要拼命入读这所学校？

哈佛公开课 - 幸福课课程节选

I know I will need to work extra hard.

我知道我得在工作上再加把劲儿。

I want to 实战 - SpeakingMax英语口语达人

So I had to work very hard.

所以我得很努力地工作。

耐克设计师 - SpeakingMax英语口语达人