我们必须专注自己的核心事业。
We must focus on our core business.
youdao
在这儿呆太久了。总之，我们有过很多的开心事。
Been here far too long. Still, we've had a laugh.
从他的脸上的表情，我们知道他有心事。
From the look on his face, we knew something was bothering him.
窗外下起了大雨，滴出我们冷冷的心事。
The day rains heavily, but we are linked through the cold heart.
我们可别再提旧时的伤心事了。
Let 's not reopen old sores.
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