交替的英文：
replacement
alternately
by turns

参考例句：

alternating direction implicit method
交替方向隐式法

While summer is coming on, special bargain begins in short-sleeved shirts.
春夏交替，短袖衬衫，最廉价销售。

Characterized by reproduction involving the alternation of sexual and parthenogenetic generations.
世代交替的以涉及双性与单性生殖交替进行为特征的

Arrange the strips alternately on art paper and glue them on.
在艺术纸上交替地安排彩带并且黏在他们上面。

Bending or winding alternately from side to side;sinuous.
蜿蜒的;曲折的从一边到另一边交替弯曲或蜿蜒的;曲折的

An abnormality in neuromuscular activity characterized by rapidly alternating muscular contraction and relaxation.
抽筋痉挛，阵挛神经肌肉活动的不正常状态，特征是快速交替的肌肉收缩和放松

A rapid swimming stroke consisting of alternating overarm strokes and a flutter kick.
自由式游泳以双臂呈圆形交替的动作与急速的双腿蹬踢形成的快速游泳法。

A mild affective disorder characterized by alternating periods of elation and depression.
躁郁症患者一种精神上的狂乱，其特点为愉快情绪与抑郁情绪交替出现

Sweep flame around tube in short strokes up and down at right angles.
然后围绕着管道短距离上下交替对管道进行火焰烘烤，并以适当的角度旋转管道，避免烧穿管道。

the alternation of day and night
日夜交替

replacement是什么意思：
n. 更换；代替；归还；复位；代替者；补充兵源

Insertion and replacement
插入和替换

She replaced the receiver.
她将听筒放了回去。

a substitute; a substitution; a replacement
代替物

alternately是什么意思：
adv. 轮流地，交替地

Are there alternatives to prison?
除了监禁还有其他办法吗？

should alternately present as undulate .
激情平淡应呈波浪形交替出现。

There are two reasonable alternatives.
有两个合理的替代方案。

turns是什么意思：
v. 使旋转；翻过来；转弯；转向；转变
n. 旋转；翻转；转弯；变化

Not turn away from the old, but turn toward the new.
不是背弃旧的，而是朝向新的。

As it turned out, the advice was bad.
事实证明，这个主意极不高明。

I'll take you at the turn.
你转身时我再来对付你。