swiftness

美音音标: [swɪftnəs] swiftness
英音音标: [swɪftnəs] result.0.expl|add:"

解释
迅速; 敏捷;

同义
fastness swiftness speed
词性
n
解释
a rate (usually rapid) at which something happens
示例
the project advanced with gratifying speed