他们研究吸热的原理.They work on a principle of heat absorption.此过程是吸热的,同时很快发生碳积沉并使催化剂活性减低.This process is endothermic with rapid carbon deposition and deactivation of the catalyst....
他预料来的客人会比邀请的多，就多买了食物。He bought extra food in anticipation of more people coming than he'd invited.我邀请的人里不包括他.I excepted him from my invitation.她邀请的客人都要经过严格挑选.She was very select in people she invites....