However about 97 percent of this huge amount is sea water,or salt water,然而,这个庞大数量里有97%是海水,或者盐水, conj. 还是; 或,或者; 不然,否则; 左右; prep. 在…之前,比…更早; n. [纹章] 黑金色、黑色;
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我也可以翻译成However about 97 percent of this huge amount is sea water,and salt water,然而,这个庞大数量里有97%是海水,和盐水,