显而易见；一清二楚
(as) plain as day; (as) plain as the nose on your face; (as) plain as a pikestaff
It's plain as day that they must sell their house before they can buy another.
It's plain as the nose on your face that she's lying.
　
欢天喜地
on cloud nine
He was on cloud nine after winning the marathon.
　
囊空如洗；一文不名；一贫如洗
not have two halfpennies to rub together
When my dad left us we did not have two halfpennies to rub together.
　
露出马脚；泄漏天机
give the game away
We were trying to pretend we didn't know it was her birthday but David gave the game away.
　
轰动一时；一鸣惊人；名噪一时
make a noise in the world
He seemed very eager to make a noise in the world.
　
变化无常；反复无常；朝三暮四
chop and change
After six months of chopping and changing, we've decided to go back to our old system.
　
铁石心肠
(as) hard/tough as nails
Don't ask her for a contribution--she's hard as nails.
　
响彻云霄；震天价响
rend the skies/air
Patriotic songs rend the air at the boot camp.