易混淆的单词： ERST

Step the meek fowls where erst they ranged .

步骤温顺家禽在往昔，他们不等。

That xenon could no form chemical compounds was erst believed by scientists .

科学家曾相信：氙气是不能形成化合物的。

In have no alternative , turn over your erst love letter again again , can 't help be like , the tear falls rain !

无可奈何中，再重翻你往昔的情书，不禁泪落如雨！

He had a wife erst too .

他从前也有过老婆。

For erst , they did not anxiety about deadlines and editors .

他们首次可以不用为截稿日期和编辑而烦恼.