中国发现的钴矿含锰量高，因此呈现出较弱的蓝灰色。
Cobalt ores found in China have a high manganese content, which produces a more muted blue-gray color.
这些水源的一个问题是，深水区的含盐量也比浅水层的含盐量高。
One problem with these sources is that the deep water also has a higher level of salt than shallower aquifers.
如果消息吞吐量高，数据库应该具有更高的伸缩性。
A database should scale better if message throughput is high.
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