Once the alkalinerock is dissolved, the metal ions might either form carbonates that remained with the soil or leach from the soils with run-off.
一旦碱性岩石被溶解，金属离子形成碳酸盐或者从土壤中淋滤流失。
2
An analysis carried out by the probe, which landed on May 25th, suggests the local regolith (the crushed rock that passes for soil on Mars) is slightly alkaline-which such vegetables prefer.