N an ordinary consisting of a diagonal cross on a shield X形十字 [heraldry]
They found signs that in some years the waters were warmer or saltier than others, due to increased evaporation or reduced precipitation.
他们发现，某些年份的海水比其它年份更加温暖或盐度更高，其原因是蒸发量的增加或者降水量的减少。
As Americans ate more calories, they could have eased up on some of the saltier choices so that their overall sodium consumption remained constant.
美国人摄入了更多热量，他们或许会放弃一些含盐量更高的食品，好让总食盐消耗量维持正常水平。
The 400-year-old shells show that the James River was saltier back then, which shows that there was little rainfall to recharge the supply of fresh water.
那些有400年岁月痕迹的硬壳表明，当年詹姆斯河的河水盐度更高，也就是说可以补充淡水资源的降雨极其稀少。
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