Perdue
a. 隐藏的, 看不见的, 未被注意的\\nn. 敢死队员, 极渺茫的希望
🗣️ 情景例句
Oh no!
噢 糟糕！
Nothing is so certain as the unexpected.
天有不测风云，人有旦夕祸福。
Shortly after this the famous H. M. S. Challenger expedition established the study of the sea-floor as a subject worthy of the most qualified physicists and geologists.
此后不久，英国著名的“挑战者”号舰艇对海底的那次考察，把对海床的研究确立为一个值得一流物理学家和地质学家从事的研究课题。