英文關鍵字
adult
arrive
attempt
bell
business
businessman
businessperson
buzzer
call
canvasser
caucasian
door
doorbell
entry
exterior
finger
fist
front
guest
hand
home
house
human
knock
knocking
leave
male
man
outdoor
outdoors
outside
people
person
press
push
rap
rep
representative
residence
ring
ringing
sales
salesman
salesperson
visit
visiting
visitor
wait
white