999英语网 英语单词
Frictionless的音标发音
Frictionless
英式发音：[f'rknles]
美式发音
(adj.) lacking all friction; 'a perpetual motion machine would have to be frictionless' .
尤妮斯录入
(adj.) lacking all friction; 'a perpetual motion machine would have to be frictionless' .
尤妮斯录入