call on

(call upon)访问,拜访;号召,呼吁

calibre (US caliber), calico, California, caliper, calipers, caliph, caliphate, calisthenics, calk, call, call after, call at, call back, call down, call for, call for sth, call forth, call in, call in question, call off, call on/upon, call on/upon sb (to do sth), call sb down, call sb out, call sb/sth off, call sb/sth up, call sth, call sth forth, call the roll, call up, call-box, call-girl, call-in, call-up, call...to account, caller, calligrapher, calligraphy, calling, calling-card,