调查examination;exploration;exploratory search;investigation;research;study详细»
调查check into;check on;check upon;enquire into;enumerate;enumeration;examine for;examine into;finding;go over;inquire into;look;look into;made inquiries;make an investigation on;make inquiries;prospect;research into;saw into详细»
调查examination;inquire;investigate;investigation;made inquiries;research;survey详细»