BBC4 个月
Swimming competitors and competition areas
Swimming pool - competitive swimming events can take place in both 25 metre and 50 metre pools. Lanes - each swimming pool is split into eight separate lanes of 2.75 m and the outer lanes must ...
BBC5 年
Swimming competitors and competition areas
Swimming pool - competitive swimming events can take place in both 25 metre and 50 metre pools. Lanes - each swimming pool is split into eight separate lanes of 2.75 m and the outer lanes must ...