It's difficult for me to be casual about anything.

要我轻松待事有难度。

What you mean as a casual remark could be misinterpreted.

你不经意所说的话可能会被误解。

I also bought some casual clothes for the weekend.

我还买了些休闲服准备周末穿。

establishments which employ people on a casual basis, such as pubs and restaurants.

雇用临时工的地方，例如酒吧和餐馆。

It became increasingly expensive to hire casual workers.

雇用临时工变得越来越贵了。