Boast: to talk with too much pride about sth that you have or can do 自夸；自吹自擂
I don't want to boast, but I can actually speak six languages.
我并不想吹嘘，但我确实能讲六种语言。
She is always boasting about how wonderful her children are.
她总是夸耀她的孩子们多么出色。
He openly boasted of his skill as a burglar.
他公然炫耀他的盗窃手法。
Sam boasted that he could beat anyone at poker.
萨姆吹嘘说打扑克牌谁都赢不了他。

Flaw
1. a mistake in sth that means that it is not correct or does not work correctly 错误；缺点
The argument is full of fundamental flaws. 这段论述充满根本性的错误。
The report reveals fatal flaws in security at the airport. 报告揭示了机场安全的致命缺陷。
2. a crack or fault in sth that makes it less attractive or valuable 裂痕；裂隙；瑕疵
The vase is in excellent condition except for a few small flaws in its base.
花瓶完好无缺，只是底部有几处瑕疵。
3. a weakness in sb's character （品格上的）弱点，缺点
There is always a flaw in the character of a tragic hero.
悲剧主角总有性格上的缺点。

Cherish: to love sb/sth very much and want to protect them or it 珍爱；钟爱；爱护
Children need to be cherished.
儿童需要无微不至的爱护。
her most cherished possession
她最珍爱的物品

1. Rip: to tear sth or to become torn, often suddenly or violently （突然或猛烈地）撕破，裂开
I ripped my jeans on the fence.
我的牛仔裤在栅栏上挂破了。
The flags had been ripped in two.
旗帜都被撕成了两半。
She ripped the letter open.
她撕开那封信。
I heard the tent rip.
我听到了帐篷撕裂的声音。