do research into

进行…的研究

do by sb., do down, do duty for, do experiment on, do for, do for sb, do good to, do harm (to), do harm to, do it yourself, do justice, do not have the heart, do one's best, do one's bit, do one's duty, do one's hair, do one's level best, do one's utmost, do oneself proud, do over, do sb in, do sb. a favour, do sb. good, do sb. wrong, do sb/sth down, do sth out, do sth to sb, do sth. with a will, do up, do up one's hair, do well, do with, do with sth, do without, do without (sb/sth), do wrong, do's, do's and don'ts, do-gooder, do-it-yourself,