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Gum rosin is a kind of natural resin with high economic value.
松香是一种具有重大经济价值的天然树脂。
youdao
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Perhaps because of a natural gum in the plant, the layers stuck together.
也许由于植物中有天然胶质，几层粘到一起了。
youdao
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Gum Arabic is a natural hydrocolloid.
阿拉伯树胶是纯天然的水合胶体。
youdao
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Gum Arabic is a natural hydrocolloid.
阿拉伯树胶是纯天然的水合胶体。
youdao