情景对话
B: So what did you get?

A: It's all in the bag.

B: What's this? Essential oil? Wow! This stuff is expensive.

A: I need that to relax. I'm going to put a few drops in my bath water.

B: How is oil supposed to make you relax?

A: They all have essence of flowers in them.

B: [Opening the little bottles] Mmmm. They smell nice.

词汇注释
essential oil n. 精油。

relax 是及物动词，意为“放松, 使 ... 放松”，例如：
The music will help to relax you.
音乐会使你感到轻松。

drop n.滴

be supposed to 应该
He is supposed to be back at the base by seven.
他应该在7点以前回到基地.

essence n.香精

smell vi 有某种气味
The flowers smell sweet.
这些花很香。
参考译文
B: 那你买了什么？

A: 全在袋子里。

B: 这是什么？精油？哇！这东西很贵。

A: 我需要它来帮我放松。我要在我的洗澡水里加上几滴。

B: 精油要怎么帮你放松？

A: 它们里头都有花香精华。

B: （打开小瓶子）嗯。很好闻。