英文關鍵字
human
voltage
closeup
fingertip
electric
spark
collision
shock
electricity
live
wire
danger
safety
finger
touch
hand
current
power
energy
hazard
warning
risk
injury
burn
accident
caution
electrical
discharge
arc
short
circuit
fault
wiring
conductor
insulator
engineering
physics
science
experiment
demonstration
slow
motion
close
black
background
slowmotion
footage
coming
contact
creating
burst
sparks
demonstrating
dangers