英文關鍵字
1080p
20s
academic
adult
call
calling
campus
caucasian
college
communication
connection
definition
device
education
gesture
hands
hd
high
highdef
higher
holding
knowledge
library
male
man
mobile
on
one
person
phone
phoning
positive
school
smartphone
standing
student
students
technology
the
thumb
university
up
wireless
young