美 [tɪr ʌp]
分层：将物品或信息分为不同的层次或级别。
a worker who ties something
同义词： tier
... tier up 层层排列 top tier 当之无愧的一流商学院 ; 顶层 ; 高层 ; 顶尖的 Tier One 一级资本 ; 本比率 ; 第一级 ; 一级供应商 ...
Left click, hold, and drag the taskbar up one tier.
点击左键，保持，拖动任务栏到一层之上。
Because I have done my multi-tier analysis up front, I know that my resources will be pulled to do maintenance at the points highlighted in pink in Figure 9.
因为我提前完成了我的多层分析，我知道在图9种用粉色加亮的点上我的资源将会被拖延去做维护。
It will depend on the density of your points (see a few words on density), but a good recommendation is to start off with the simple range approach and then move up to the tier approach if need be.
这取决于点的密度(参见关于密度的简要说明)，但是我们建议首先采用简单的范围方法，然后在需要的时候提升到层方法。
In the tier up from that are the people who want to get into the system.
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It is expanding rapidly to 2nd and 3rd tier cities, setting up call centers and logistics, and enhancing customer services.