这个广告中的流行语很容易让人记住。

The ___catchwords in this advertisement are very easy to remember.

在环保领域，'可持续发展'和'碳中和'已经成为热门流行词。

In environmental discussions, 'sustainability' and 'carbon neutrality' have become popular ___catchwords.

字典页眉的导词能帮你快速定位词条。

The ___catchwords on the page header help you locate entries quickly.