relay
加入词篮hurdling
race
lap
marathon
rapid
fast
quick
quickly
immediately
shortly
now
exercise
physical
build
built
fitness
body
gym
gymnasium
coach
jog
swim
swimming
swam
swum
dive
diver
diving
scuba
swimming pool
swimsuit
ski
water-ski
skate
ice-skating
roller-skating
slide
skateboard
taekwondo
fence
sword
dagger
outing
climber
hike
hiking
bounce
fishing
fisherman
horse
stable
ride
rode
ridden
fan
market
greengrocer
supermarket
shop
shopping
store
shopkeeper
license
certificate
show
showed
shown
appear
convenience
convenient
handy
grocery
grocer
booth
cheap
expense
expensive
price
buy
bought
afford
purchase
sell
sold
seller
plastic
e-card
customer
bargain
discount
cost
spend
spent
take
pay
paid
