找到一种植物，[辨别它的确切用途]然后申请专利并制成药物所需要的平均时间是十到十五年，[所以]这是一项长期投资。
Ten to fifteen years is the average time between finding the plant, [identifying its exact use] and patenting it into a drug [so] it is a long-term investment.
从卫星观测中辨别浮游植物的种类一般来说是不可能的，而且这片地区也有大量其他种类的浮游植物存在。
It generally isn't possible to identify phytoplankton species through satellite observations alone, and many other kinds of phytoplankton occur in the area.
她还能靠闻不同的植物和触摸地面来辨别自己在花园的位置。
She could also tell where she was in the garden by the smell of the different plants and the feel of the ground under her feet.
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