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step allelomorph, step allele：阶梯等位基因

等效异位基因 polymeric gene | 阶梯等位基因 step allelomorph, step allele | 上位基因 epistatic gene

Step Backward：逐帧倒放

step 步骤 | step backward 逐帧倒放 | step By 逐步执行单位

step-in chemise：女式无袖胸衣

step-head piston 阶梯顶活塞 | step-in chemise 女式无袖胸衣 | step-index multimode optical fiber 突变型多模光纤

step cline：不规则渐变群

step change 阶跃变化 | step cline 不规则渐变群 | step cone 宝塔轮

Step father：继父,与你的母亲结婚但不是你的亲生父亲

Step-son: 继子; | Step-father: 继父,与你的母亲结婚但不是你的亲生父亲; | Step-mother: 继母;

two-step footstool：两级踏凳(台)

two-step exercise test 二级梯运动测验,二阶运动试验,运动试验,阶梯试验 | two-step footstool 两级踏凳(台) | two-step heat treatment 两阶段热处理

One dancer was fractionally out of step：有个跳舞人的舞步稍微有些不合拍

17 out of step 步划不一致 不协调 | One dancer was fractionally out of step. 有个跳舞人的舞步稍微有些不合拍. | He has frequently been out of step with society. 他常常同社会不合拍.

Gather in step：同步

创造性:inventive step | 同步:Gather in step | 进步性:invention step

step-over headlock：(横越式头部固定)

step-over toe hold(横越式足部固定) | step-over headlock(横越式头部固定) | step-over sleeper hold(横越式窒息固定)

ice step : a step which is dig by climber with ice ax：冰阶

ice ax : a tool for ice-climbing. 冰镐 | ice step : a step which is dig by climber with ice ax. 冰阶 | snow goggles : a pair of glasses that protect climbers' eyes. 雪镜

colonial rule：殖民统治

colonial protectorate;殖民保护地;殖民被保护国;; | colonial rule;殖民统治;; | Colonial Secretary;辅政司;;

matrimonial agency：婚姻介绍所

21 deep love 深沉的爱情 | 22 matrimonial agency 婚姻介绍所 | 23 lover,sweetheart 情人