Therefore, according to the nitrogen removal rate, consumption of carbon sources and treatment cost, cinnamomum camphor leaf is considered as the best denitrification carbon source in local region.
结合各碳源脱氮率、耗碳源量以及处理成本，选取基本处理的香樟叶作为最佳纤维素碳源。
Bought a metallic bookmark with a big leaf of spicy camphor tree and peace dove.
买了一个好看的金属书签，一个大大香樟树的叶子上挂着一支和平鸽。
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