Dsb
abbr. double sideband 双边带; double-strength B (quality glass) 双B强度（玻璃质量）
🗣️ 情景例句
Yes. This is Richard Stewart.
是的。我是Richard Stewart。
Where are you calling from?
你从哪打来的？
She understood what I was talking about, even though it was the first time we had spoken together.
她理解我的话，虽然我们是第一次在一起说话。