21号英语怎么写缩写

21号的英语缩写是21st.

例句

Your first meeting is on Monday the 21st at 9 a.m.

你的第一次会议时间在21号星期一上午9点。

What is often put on the top of a cake for the 21st birthday?

21岁生日的蛋糕上面通常放什么？

The 21st century has witnessed a revolution in information communication brought by the Internet.

21世纪见证了互联网带来的信息通信革命。

oday, China is trying to build the Silk Road Economic Belt and the 21st Century Maritime Silk Road.

今天，中国正在努力建设“丝绸之路经济带”和“21世纪海上丝绸之路”。

All this means that agriculture in the 21st century will have to be very different from how it was in the 20th.

所有这些都意味着21世纪的农业将与20世纪大不相同。

Globalization is a phenomenon of the 21st century.

全球化是21世纪的现象。