23 Again and again he rose, took a big chestful of air, and went down.
23 Again and again he rose, took a big chestful of air, and went down.
他一次又一次地冒出水面，吸足气再潜下去。
23 Again and again he rose, took a big chestful of air, and went down.
他一次又一次地冒出水面，吸足气再潜下去。