In fact , the willingness to experiment is one of the most striking features of china today , and it seems to be rooted in confidence rather than security 事实上,对实验的积极态度是当今中国的显著特征之一,而它似乎直根于自信而不是安全
2.
Since cotton is a tap rooted plant and dependent on sub - soil k , especially in mid - season , k supplies had become inadequate regardless of surface soil k levels 因棉花为直根作物并依赖底土钾，尤其是生育中期，无论表层土壤钾水平如何，供钾也会变得不足。
