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
Any time.
随时效劳。
It's $30.00 one way or $55.00 round trip.
单程票价30美元，来回票价55美元。
This model's less expensive than that one.
这种型号比那种要便宜些。