A -- timekeeper
B -- land drill
C -- touching, the finishing line D --
lifeguard E -- artificial waves
F -- back stroke G --
swimming lane
H -- treading water I -- diving pool
J
-- breast stroke K -- one-meter springboard
L -- butterfly stroke M --
starting dive
N -- changing room O -- starting block
P -- side
stroke Q -- swimming suit ( ) 出发起跳 ( )救生员