preserving algae的用法和樣例：
例句
- Microorganisms Algae microorganisms in the water overpopulate because of the surplus nitrogen.
由于過(guò)剩的氮，水中的藻類(lèi)微生物過(guò)密。 - As well as Australia, the pioneering algae technology is also being tested in the United States and Germany.
除了澳大利亞之外，美國和德國也都在測試這種具有開(kāi)創(chuàng )性的藻類(lèi)利用新技術(shù)。
