The problem had been alluded to briefly in earlier discussions.

这个问题在以往的讨论中已经间接提及。

With friends, she sometimes alluded to a feeling that she herself was to blame for her son's predicament.

和朋友们一起时，她有时暗示她感到儿子的困境要怪她自己。

Do you remember that PR strategy I alluded to the other day?

你还记得我前几天间接提到的公关策略吗？

But as I alluded to earlier, Pleistocene rewilding is extremely controversial.

但正如我之前提到的，更新世的野化饱受争议。

You alluded to the issue of HIV.

你暗示了艾滋病的问题。