mysticete

常見(jiàn)例句

• The origin of the mysticete's low-frequency hearing is far murkier, even though the fossil evidence of that group now dates back to as early as 34 million years ago.
  雖然就化石記錄來(lái)看，須鯨在3400萬(wàn)年前（漸新世初期）就出現(xiàn)了，可是牠們的低頻聽(tīng)覺(jué)起源仍然混沌不明。
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