kid

小孩（口语）;开玩笑

After her husband left, Amy raised her three kids alone．

自从她先生离开后，爱咪独自抚养三个孩子。

l was just kidding．

我不过是在开玩笑。

adult

成年人

You are no longer a child. You are an adult.

你已经不再是小孩子了。你现在是成年人。

second

秒，第二的

There are sixty seconds in a minute.

一分钟有60秒。

I'll be back in a second.

我一会儿就回来。

I hope you'll give me a second chance.

我希望你会给我第二次机会。

When it comes to singing, Peter is second to none.

说到唱歌，彼得是最棒的。

secondly

第二，其次

Firstly, the car is absolutely gorgeous. And secondly, the price is affordable.

第一，这辆车真的超炫。其次，价格又负担得起。