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虽然早期的潜艇并不适于航海,但它们直到现在取得了卓越的进步。
Although early submarines were less-than-seaworthy, their progression through present times has been remarkable.
youdao
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虽然早期的潜艇并不适于航海,但它们直到现在取得了卓越的进步。
Although early submarines were less-than-seaworthy, their progression through present times has been remarkable.
youdao