Edits
abbr. 实验数字电视系统（Experimental Digital Television System）
🗣️ 情景例句
Marketing promotion.
市场推广。
He has a glass of juice.
他有一杯果汁。
This is a major achievement because, in relative terms, planets are very small and old not emit light.
这是一个重要的成就，因为相对来说，行星很小，而且也不发光。