但也许是时候更新这份必需元素目录了，因为科学家们发现一种细菌会用砷来代替磷，不需要磷也可生存。
But it might be time to update that list. Because scientists have found a bacterium that can do without phosphorus-live on arsenic instead.
这些特质他都可以在自己的身上找到，但也都还有着可提高的空间，于是他成了一名佛教徒。
These were all qualities he recognized in himself, but which all could be improved upon, and so he became a Buddhist.
定位的市场是很小的，但也是有利可图的，是市场上对你的产品有需求的那一部分。
A niche is a small, but profitable, segment of the market where there is demand for your product.
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