Think of this as the brain.把這個看作是大腦

think of想到；考慮；想象；設想；打算；認為

It was sweet and thoughtful of you to think of it.

你們真好，為我想得那么周到。

What do you think of my new car?

你覺得我的新車怎么樣？

When you're becoming aroused, your brain switches on.當你性喚起時大腦就會激活

switch on(用開關)開啟

The video is programmed to switch on at ten o'clock.

電視機設定在10點鐘自動打開。

Just put the plug in the socket and switch on the machine.

只需將插頭插入插座并開動機器就行了。

and then added UK 92480 to the tissue bath.隨后將UK92480加入組織浴槽中

add to增加

I have nothing to add to my earlier statement.

我對我先前說的話，沒有什么補充的。

I didn't want to add to Mother's misery.

我不愿意增加母親的痛苦。