英文關鍵字
african
american
assignment
business
businesswoman
call
cam
camera
class
client
coaching
communication
computer
consultant
education
elearning
explaining
freelancer
headphones
headset
home
homework
improve
knowledge
language
laptop
learn
lecture
lesson
make
microphone
mixed
online
person
race
study
support
talking
teacher
teaching
technology
trainee
training
using
video
videocall
videochat
virtual
wireless
work