caller

n.访问者

call forth, call in, call in question, call off, call on, 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, calligrapher, calligraphy, calling, calling-card, calliper (also caliper), callisthenics (also calisthenics), callosity, callous, calloused, callously, callousness, callow, callowness, callus, calm, calm down, calmly, calmness, Calor gas, calorie,