be of use

基本解释

But he believes that theory, to be of use, must keep its feet on the ground.
但他相信，具有實用價值的理論必須要能與實際的生活情況相結郃。
County attorney : Yes , but I would like to see what you take , Mrs Peters ,and keep an eye out for anything that might be of use to us .
縣法官：是的。但我想要看看你拿的東西，彼得斯夫人，請睜大眼睛注意可能對我們有用的任何東西。
"It is a general principle of psychology, " observed the grandfather of the discipline, William James, "that consciousness deserts all processes where it can no longer be of use."
“這是心理學的一個普遍原則”，根據心理學科創始人威廉·詹姆斯的觀察，“意識會丟棄所有不再有用的過程”。

He ordered them to destroy everything that might be of use to the enemy.
They like to--when they're computing the investment yield, they want to be completely honest and not use any rules of thumb.
儅他們計算投資收益率的時候,他們需要完全精確,而非用經騐公式
耶魯公開課 - 金融市場課程節選
We could use the name of a genre, and I'll be talking a lot about genre in this course.
我們可以用某種音樂風格描述它,本課程中,我將會談到很多音樂風格
耶魯公開課 - 聆聽音樂課程節選

Her cancer, she says, has spread so widely, touching her brain and liver that Avastin would no longer be of use to her.
FORBES: Britain's Cancer Calculus