Actually I Assume That

I have to assume that other designers actually work like this in order for someone to get that ludicrous idea in their head.

我必须假设其他设计师事实上以这样的方式按部就班地为某人工作，以获得某人脑袋瓜中的滑稽主意。

I assume that if anyone actually needs me, they will reach me on my mobile, or by text or email.

我的假设是如果真的有人找我，他们会打我的手机、发信息给我或是写电子邮件。

Let's assume that I know what I'm earning next year; there is actually uncertainty about it.

假设我知道我明年会赚多少钱，虽然这通常都是不确定的。