留美老師帶你每日說英文第821期:大白鯊的呼吸方式

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臺灣籍旅美老師今天交給我們的句子是：

Most species can open and close their mouths to pump the water through. But white sharks and a couple dozen other species don't do that. To breathe, they have to move forward through the water with their mouths open.
大部分的魚類可以透過嘴巴交替開合的方式，將水抽吸到鰓裏以獲得氧氣，但是大白鯊和其他幾十種的魚類卻不是這樣的。它們必須張着嘴巴向前遊動才能夠呼吸。