Definition: to study a subject in detail or to try to find information about a subject Level: B2
他花了数年时间研究一种稀有的非洲方言。
He ___researched a rare African dialect for several years.
她正在研究治疗疟疾的可能方法。
She's ___researching possible cures for malaria.
他在网上查询了航班和酒店信息。
He ___researched flights and hotels online.
