星期三的英文怎么写缩写

　　The capital has been without mains water since Wednesday night.

　　从周三晚上开始，首都就停水了。

　　Did you happen to see her leave last Wednesday?

　　上周三你有没有碰巧看见她离开？

　　Come and have supper with us on Wednesday, if you're free.

　　如果你有空的话，周三晚上来和我们一起吃晚饭吧。

　　Entries must arrive by first post next Wednesday.

　　参赛作品必须在下周三第一批邮件之前寄达。