英文關鍵字
hand
stopwatch
coach
elderly
adult
male
sitting
kayak
pool
paddle
swim
training
competition
rowing
two
time
explosive
speed
by
personal
fitness
sport
outside
exercise
person
clock
athlete
stop
trainer
cardio
activity
caucasian
front
instructor
leisure
healthy
lifestyle
pursuit
recreational
middle
sporty
vitality
water
object
swimmer
sports