His dorsal fin was down and his huge pectorals were spread wide.

它的脊鳍朝下耷拉着,巨大的胸鳍大张着.

英汉文学 - 老人与海

He could see their wide, flattened, shovel - pointed heads now and their white tipped wide pectoral fins.

他这时看得见它们那又宽又扁的铲子形的头,和尖端呈白色的宽阔的胸鳍.

英汉文学 - 老人与海

At low tide, head swaying sideside, crawling forward feeding the body with the pectoral fins.

退潮后, 头部左右摇摆, 全身用胸鳍爬行前进觅食.

互联网

I have never been able to do so , and prefer to look pelvic fin.

有些人可以采取一看胸鳍, 立即知道它的男性或女性.

互联网