不费力的

Nobody was keen to take on such a thankless task.

有愿意承担这种费力不讨好的任务。

You can see problems that aren't appear in a double-spaced Courier typescript. ( Yes, you could do this in the old days on galley proofs, but that was an expensive luxury for most writers).

（错，以前在毛条校样时也能发现问题，但是这对于大数作家来说，是费力不讨好的）。