throw in

英 [ˈθrəʊ ɪn]

美 [ˈθroʊ ɪn]

无意中说; 随口说; 免费赠送; 额外奉送

柯林斯词典

PHRASAL VERB 无意中说;随口说
If youthrow ina remark when having a conversation, you add it in a casual or unexpected way.
1. Occasionally Farling threw in a question.
  法林有时会突然冒出个问题。
PHRASAL VERB 免费赠送;额外奉送
If a person who is selling somethingthrows insomething extra, they give you the extra thing and only ask you to pay for the first thing.
1. Pay £4.80 for larger prints and they throw in a free photo album...
  付 4.8 英镑冲印更大尺寸的照片就会获赠一本相册。
2. They were offering me a weekend break in Paris — with free beer thrown in.
  他们让我去巴黎休息一个周末——外加免费啤酒。

verb

to insert between other elements
1. She interjected clever remarks
Synonym:interjectcome ininterposeput ininject
give up in the face of defeat of lacking hope
1. In the second round, the challenger gave up
Synonym:drop outgive upfall by the waysidedrop by the waysidethrow in the towelquitchuck up the sponge
add as an extra or as a gratuity

I think for$ 8000, you throw in a kidney.
八千块都可以再多送你一个肾了。
When it's time to throw in the towel.
什么时候是到该认输啦。
When you throw in the towel, you admit defeat.
当你把毛巾扔下，你就是承认输了。
A losing throw in this game.
在此游戏中输掉的一掷。
You're ready to throw in the towel and I'm telling you.
你准备认输，我告诉你。
Next time you go shopping, throw in a few extra fruit and vegetables
下次你去买东西，多买点水果蔬菜。
Pay £ 4.80 for larger prints and they throw in a free photo album
付4.8英镑冲印更大尺寸的照片就会获赠一本相册。
We're never going to persuade them so we might as well throw in the towel now.
我们决不会说服他们，因此我们不妨现在就认输。
And I'll throw in the five grand Kevin owes.
而且凯文欠我的五千美金我也不要了。
They were offering me a weekend break in Paris — with free beer thrown in.
他们让我去巴黎休息一个周末——外加免费啤酒。