catching

1. ADJ If a feeling or emotion is catching, it has a strong influence on other people and spreads quickly, for example through a crowd. 具有感染力的[v-link ADJ]

Enthusiasm is very catching. 热情是非常具有感染力的。

2. ADJ If an illness or a disease is catching, it is easily passed on or given to someone else. 传染的[非正式] [v-link ADJ]