Any single theoretical perspective can 't explain the complexity of international history and the interaction between theory and history, unless merging different kinds of IR theories.

国际关系史纷繁复杂，任何一种单一的理论视角都难以反映国际关系史的全貌，只有将不同的理论视角加以组合才能实现理论与历史的有效互动。

youdao

T heir chemical structures were identified by NMR, UV and ir spectra as well as elemental analysis.

通过元素分析、核磁共振谱、红外光谱和可见吸收光谱对单体和聚合物的结构进行了鉴定。

youdao

Objective to study the role of insulin like growth factor type I receptors (IGF IR) in the modulation of cord blood t lymphocyte functions and its clinical significance.

目的研究胰岛素样生长因子i受体(IGF IR)基因表达对脐血t淋巴细胞功能的影响及其临床意义。

youdao

The only trouble we initially ran into was that our original no-frills Freeview box wasn't listed on SlingPlayer's IR code database, and since the SlingBox couldn't be trained using our own remote control, we had to procure a compatible Freeview box.

ENGADGET: App review: SlingPlayer Mobile for Android

The key is for them to play nice with each other, and the answer isn't a one-way interface like IR, or an HDMI pass-through with multiple user interfaces layered on top of each other.

ENGADGET: Editorial: What's wrong with TV, and what it might take to change it