1. Hydroponically grown crops will be almost the entire source of ingredients for the foods astronauts will consume on remote space stations in decades to come. 2. Instead, hydroponically grown crops would have been the best hope. 3. Last year China imported record quantities of rapeseed and soybeans, because foreign oil seed production is cheaper and the quality often higher than that of domestically grown crops. 4. They command a much higher price than any other traditionally grown crop here. |
每页显示:
共 4 句