It was intended to impede the apprehension of the person.它旨在妨礙對該人的拘押的.They also impede backmixing of sand.同時也可防止砂子的返混.At no time did I make an attempt to impede any investigatory effort.我絕沒有試圖妨礙過任何調查工作。Severe steric effe...
Severe steric effects at the reactive carbon would impede the substitution.大的立體效應阻止在碳上的取代.It was intended to impede the apprehension of the person.它旨在妨礙對該人的拘押的.They also impede backmixing of sand.同時也可防止砂子的返混....