好辛苦的英文是什么？

painstaking
[5peinsteikiN]
n.
苦干, 辛苦
adj.
辛苦的, 辛勤的, 艰苦的
hardship
[5hB:d7Fip]
n.
困苦, 艰难, 辛苦

常见的就是hard 或者pain
All our hard work produced little or no result.
我们辛苦努力无甚结果.
It's such a pain to walk up and down the stairs.
上下楼梯很辛苦。

too back-busting
too toilsome

so toilsome
如果用too 了应该用too toilsome to do sth.

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