He said naturally growing bacteria may have helped keep the water clean enough to sustain life.

他说，也许是水池里自然生长的细菌帮助保持池水清洁维持了金鱼的生命。

youdao

You will be having protein matched with a carb, and incorporating vegetables and fiber into your diet to help sustain your health and keep you feeling full.

你只需补充跟碳水化合物一样多的蛋白质，并且在你的食物中补充蔬菜和纤维来维持你的健康和饱腹感。

youdao

"Goldfish are very hardy critters." he said naturally growing bacteria may have helped keep the water clean enough to sustain life.

他说，也许是水池里自然生长的细菌帮助保持池水清洁维持了金鱼的生命。

youdao

Also, his cities are filled with starving people (90% of his world's population died from nuclear annihilation or famine from global warming) because, he says, he has to keep building war machines to sustain his combat efforts.

CNN: STORY HIGHLIGHTS

In your noble example, we see the virtues and the values that sustain America, that keep this country great.

WHITEHOUSE: President Obama and Vice President Biden Honor Iraq Veterans | The White House

This rebalancing is still a work in progress, but everybody is on record now saying surplus countries and deficit countries both have to be mindful of their policies and think about the adjustments that they need so that we can sustain economic growth and keep our borders open to goods and services over the long term.

WHITEHOUSE: G20 Summit Presidential Press Conference