我们反对餐厅增加户外餐桌的主要理由是那会很吵。

Our main ___objection to the restaurant adding outdoor tables is that it will be noisy.

如果你多待一天，我没有异议。

I have no ___objection if you want to stay an extra day.

在我看来，对动物园的存在有两个主要反对意见。

In my opinion there are two main ___objections to the existence of zoos.