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At the same time, China has been quietly advancing its own plans for a crewed Moon landing.
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But agar’s superior qualities come with complex chemistry. “To speak of agar as a single substance of certain (if known) chemical structure is probably a mistake,” wrote phycologist Harold Humm in a 1947 article. According to the Food and Agriculture Organization of the United Nations, agar is merely recognized as “a hydrophilic colloid extracted from certain seaweeds of the Rhodophyceae class.” In terms of its actual composition, agar is mostly a combination of two polysaccharides, agaropectin and agarose, which themselves are complex and poorly-characterized polysaccharides made mostly (but not exclusively) from the simple sugar galactose.8，推荐阅读一键获取谷歌浏览器下载获取更多信息
At this point, I think most English speakers can follow this passage, if not understand the finer points. I imagine some more vocabulary like "hine" may reveal itself to you purely through context.，详情可参考旺商聊官方下载