complain 是『抱怨』的意思， I can't complain. 就是『我沒什麼可抱怨的』，意思是說，『我感到很滿意了』、『真是無話可說』。

A: Did you see the new proposal on your desk?
   你看到放在你桌上的新企畫了嗎？

B: Thanks, Jill.
   吉兒，謝謝。
   I have already taken a look at it.
   我已經看了一下。

A: Wendy hoped that is what you were expecting.
   溫蒂希望那符合你想要的。

B: No complaints here.
   我沒什麼可挑剔的。
   From what I've seen so far, it looks really good.
   就我到目前為止所看到的，這企畫看起來很好。

A: And did you see the new memo from the
   還有，你看到行政部門新發的公文沒有？
   They would like a meeting this afternoon.
   他們今天下午想要開個會。

B: Great, I am glad we are all so eager to get things done around here.
   很好，我高興我們這裡大家都很想把事情做出個結果來。
   I definitely can't complain about our work.
   我對我們的工作絕對沒話說。