/'frɪkʃn; `frɪkʃən/
n
1 [U]
(a) rubbing of one surface or thing against another 摩擦
*Friction between two sticks can create a fire. 两个棍棒相互摩擦能起火.
(b) resistance of one surface to another surface or substance that moves over it 摩擦力
*The force of friction affects the speed at which spacecraft can re-enter the earth's atmosphere. 摩擦力能影响航天器返回地球大气层的速度.
2 [U, C] disagreement or conflict between people or parties with different views 人或党派之间不同观点的矛盾或冲突
*There is a great deal of friction between the management and the work force. 劳资双方之间存在大量矛盾.
* conflicts and frictions that have still to be resolved 仍须解决的冲突和摩擦.

n
[Date: 1500-1600; Language: French;Origin:Latin frictio, from fricare 'to rub']
[U and C]
disagreement, angry feelings, or unfriendliness between people
= tension
cause/create friction
　Having my mother living with us causes friction at home.
friction between
　the usual frictions between parents and their teenage children
friction with
　His independent attitude was a constant source of friction with his boss.
[U]technical
the natural force that prevents one surface from sliding easily over another surface
　Putting oil on both surfaces reduces friction.
[U]
when one surface rubs against another
　Check your rope frequently, as friction against the rock can wear it away.