The murder was an open-and-shut case.

这桩谋杀案很容易侦破。

《牛津词典》

It's an open-and-shut case. The hospital is at fault.

这是一件容易裁决的案子，责任在医院一方。

《柯林斯英汉双解大词典》

Some people have a hard time just sitting. If that's the case, try this: next time you drive alone, shut everything off - phone and radio - and just breathe (with your eyes open, of course).

有些人感到如坐针毡，如果你是如此的话，试一下这个方法：下次你独自开车兜风，关掉所有东西——手机和收音机——仅呼吸(当然要睁着眼睛)。

youdao

But the government says when it comes to black money, it's not an open-and-shut case.

CNN: Black money: Spain's 'euro effect'

Joe Co. would have an open-and-shut case against the companies responsible for the Deepwater Horizon disaster.

FORBES: Magazine Article

Although thousands of union members turned out at the capitol to protest, it was an open-and-shut case.

WSJ: The Weekend Interview with Gina Raimondo: The Democrat Who Took on the Unions