dray的复数形式怎么拼写

This paper introduces mechanism, research methods and main results about microbubble dray reduction.该文介绍了微气泡降阻机理 、 研究方法和重要结论.A dray is a type of horse - drawn vehicle.雪橇是一种马拉的交通工具.She stood doggedly in checkout lines; sh...

n.运货马车，一种撬v.以运货马车运，用马车运载...

dray的音标：dray的英式发音音标为：[dreɪ]dray的美式发音音标为：[dre]...