four-level laser [激光] 四能级激光器 ; 四能阶雷射
four-level solid laser [激光] 四能级固体激光器
four-level laser rod 四能级激光棒
four-level emitter 四能级放射体
four level laser 四能级激光器
four-level laser system 四能级系统
four-level fluoresent crystal 四能级荧光晶体
Kirkpatrick's Four-level Model of Evaluation 四阶层评估模型
Four Level of Leadership 领导的四个层面
Conversely, chemical engineers straight out of school can easily make almost four times the wages of an entry-level high-school graduate.
相反,刚从大学毕业的化学工程师的工资几乎是入门级高中毕业生的四倍。
It ends at the Dead Sea, the lowest point on Earth, four hundred meters below the level of the Mediterranean Sea.
VOA: special.2009.05.18
So at this point in the story-- at this level in the story, if you will, I've touched one, two, three, four numbers total or I've made two comparisons.
那么这时,我总共已经动过了1,2,3,4个数字,或者说我做了两次比较。
One, two, three, four, so on each level of the picture I'm drawing, I've seem only to be looking at each number once.
,2,3,4,可见,在我画的,这幅图的每一层上,对每个数字,都只会用到一次。
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