A pH test measures the acidity or alkalinity of a substance.pH值测试可检测物质的酸碱度。This plant prefers alkaline soil, though it will readily tolerate some acidity.这种植物在酸性土壤中也能生存, 但硷性土壤更加适宜.Acidity in soil can be neutralized by sp...
Behaviourism leaves out of account consciousness and introspection.行为主义不把意识和内省考虑在内.He thus typified the constant introspection wherewith he tortured, but could not purify himself.他就这样不断地自省,其实只是在自我折磨, 丝毫得不到自我净化.The Hermit...