音色是音乐构成的四大要素之一。

Timbre is one of the four musical elements.

youdao

它们将会有四大要素：互联网，开源，可移动设备和Web2.0。

They will be forged by four powerful elements: The Internet, Open Source, Mobile Devices and Web 2.0.

youdao

为此，该理论提出了价值澄清的四大要素和几大主要方法。

For this purpose, the theory puts forward four important elements and several main methods for values clarification.

youdao