1. envelop [ɪnˈveləp]
v. If one thing envelops another, it covers or surrounds it completely.
More dense atmosphere gradually enveloped Earth.
2. proactive [ˌprəʊˈæktɪv]
adj. Proactive actions are intended to cause changes, rather than just reacting to change.
My role is to help you take a more proactive approach to your life.
整理自《柯林斯詞典》、《新東方託福詞彙》，侵刪歉。