Bathing, in this sense, is the activity of swimming outdoors — in the sea, a river, or a lake — for pleasure, not washing your body in a bathroom. This use is especially British.

in this sense在這個意思裡，bathing是指 the activity of swimming outdoors到戶外游泳的活動——in the sea, a river, or a lake在海裡、河裡或湖裡——for pleasure是為了玩樂，not washing your body in a bathroom不是在浴室裡洗澡。this use這種用法 is especially British特別是英式英文的說法。

A bathing beach is a swimming beach; a bathing costume is a swimsuit; a sign that says “No bathing” means you must not go into the water. Americans usually just say swimming.

a bathing beach所謂的 bathing beach 就是可以游泳的海灘；a bathing costume所謂的 bathing costume 就是泳裝；a sign that says “No bathing”寫著 “No bathing” 的告示 means you must not go into the water意思是不可以下水。Americans美國人 usually just say swimming通常就直接說 swimming。

Though actually, English also uses bathing for washing in a tub, so the surrounding words tell you which one it is: sea, lake, and costume point to swimming; bath, soap, and bathroom point to washing. Older holiday writing is full of “sea bathing.”

though actually不過事實上，English also uses bathing for washing in a tub英文的 bathing 也可以指在浴缸裡洗澡，so the surrounding words tell you which one it is所以要看前後的字才知道是哪一種：sea, lake, and costume point to swimming出現 sea、lake、costume 就是指游泳；bath, soap, and bathroom point to washing出現 bath、soap、bathroom 就是指洗澡。older holiday writing早期的度假遊記裡 is full of “sea bathing.”到處都是 “sea bathing” 這個說法。