Excuse my casual attire today, it is extremely hot.

原谅我今天的便装，天气实在是太热了。

The invitation said casual, so I'm dressing casually: jeans and a T-shirt. What's wrong with that?

上写的便装，我的很随意啊，牛仔裤加T恤，没毛病啊。

Is that why you never dress down?

蒂埃里：这就是你从不便装的原因吗？

Here she now spread out and fastened a plain dark walking-dress and a few other trifles of apparel.

她现在在这里展开并系好一件朴素的深色便装和其他几件零碎的衣服。

She likes the fact that she can wear her comfortable informal clothes and have her cat sitting on her lap.

她（在工作时）可以己舒服的便装，并让她的猫坐在己的腿上。她很喜欢这一点。

" Come, come" ! said Nekhludoff, rising, and wondering why the deacon's daughter should want him, assumed a grave expression and went to the woodsman's hut.

“来来” ！聂赫留朵夫说站了起来， 不明白执事的女儿为什么要找他， 便装出一副严肃的表情， 朝樵夫的小屋走去。

So, we'd get usually one outfit — I'm thinking of the spring and the summer — to wear to the school picnic or the Dress Down Day, they called it.

所以，我们通常会买一套衣服——我想的是春天和夏天的衣服——去参加学校野餐或他们所说的“便装日”。