Tower Four, the least ambitious of all the elements intended for the site, is already being built and is to some extent shielded from the current crisis.

四号楼，作为基地里最低调的元素，已经在建造中并且远离了目前的争论中心。

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There are four elements fire, air, water and earth.

世上存在着火，气，水，土，四大元素。

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The four elements of the SIVA model are

SIVA模型的四个要素是

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The first three or four weeks or so we'll be following the elements of music: rhythm, melody and harmony-- and then a test.

开始的三或四周,我们会逐个介绍,音乐中的元素,节奏,旋律,和声,然后有一个考试

耶鲁公开课 - 聆听音乐课程节选

The full-featured controller combines a four-channel mixer section with ergonomically laid-out high-quality control elements and an integrated audio interface, all designed to professional specifications.

ENGADGET: Traktor Kontrol S4 hardware interface set to make the scene this winter

To test their knowledge of the country they're playing for, The Wall Street Journal quizzed four of Spain's American-born players on some basic elements of Spanish culture, history and government.

WSJ: World Baseball Classic��What Spain Lacks: Spaniards

The plan includes four key elements: stronger border security, creation of forgery-resistant proof-of-citizenship documents, fairer legal immigration for desirable candidates, and a "tough love" path to citizenship for those already in the United States.

CNN: Five reasons why time may be right for immigration reform