He was convinced on the basis of what had by then appeared that there would be long and difficult struggle.

他根据当时已出现的情况，深信以后会有一场漫长的艰苦斗争。

youdao

Protecting our prosperity and security in this globalized world is going to be a long, difficult struggle, demanding patience and persistence over many years.

在这个全球化的世界保护我们的繁荣和安全将是一个长期，困难的斗争，要求多年的耐心和不断坚持。

youdao

Protecting our prosperity and security in this globalized world is going to be a long, difficult struggle, demanding patience and persistence over many years.

在这个全球化的世界保护我们的繁荣和安全将是一个长期，困难的斗争，要求多年的耐心和不断坚持。

youdao