call in召来 take in 吸收,理解,消化 have difficulty in (doing) 做...有困难 have trouble in (doing)做...有麻烦 be adept in 擅长 do well in在...方面做得好 be affluent in丰富 be lost in迷于... be interest in对...有兴趣 give in屈服 join in加入,参加 take part in参加 major in主修 tune in收听 put in放进,提出 pull in（车）进站,拉入
