Blk
abbr. 黑色（black）；主动脉排空系数；坯料（blank）；空白表格（blank form）
🗣️ 情景例句
I'd love to come. But I have to be on duty this weekend night.
我是想过来，但我周末晚上得值班。
I must know your opinion.Do you agree with me?
我必须知道你的意见.你同意我吗？
Sure. We were in the same class.
当然认识。我们同班呢。