He had been questing for religious belief from an early age. [VERB + for]
他从小就一直在寻求宗教信仰。
...his questing mind and boundless enthusiasm. [VERB-ing]
他那不断探求的心灵和无穷无尽的热情
英汉双解词典包含141091条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。