Many manufacturers piggyback on some events to promote their own products.

某些事件发生之后，众多生产商趁机蹭热度推销自己的产品。

Other companies are trying to piggyback on our success.

我们获得成功之后，其它公司试图蹭我们的热度。

Some say piggybacking on other brands’ ill fortune is meanspirited.

有人说，趁其它品牌不走运的时候蹭热度，这样做太小气。