他开玩笑地说：“做个有用的人，并帮我个忙。”
弗拉克说：“他们提供有用的服务。”
有人别有用心地散布谣言，说他过去如何如何。
“嗯，”他说，“你们看，这样真的有用。”
专家们看到了移动技术在教育中应用的趋势，不过他们说，随着教授们试图提出有用的应用，移动技术还处于起步阶段。
Experts see a movement toward the use of mobile technology in education, though they say it is in its infancy as professors try to come up with useful applications.
雕像和公式，这些有用，或者更确切地说，滥用人类天赋的机械工具，是一种脚镣，持续且不成熟。
Statues and formulas, these mechanical tools of a serviceable use, or rather misuse, of his natural faculties, are the ankle-chains of a continuous immaturity.
布朗太太说没有用。
“不幸的是，联邦法律和可用的联邦资金并没有用于识别和减少污染源或污染。”托尼·格里夫说。
"Unfortunately, the federal law and the available federal funding don't get at identifying and reducing sources or contamination," said Toni Glymph.
她知道说许多次春季大扫除他都没有来许多次春季大扫除是没有用的。
She knew it was useless to say that he had let many spring cleaning times pass.
另一个学生约翰说：“这很有用，提高了学生的能力。”
"It's very helpful and improves students' abilities," said John, another student.
“我们要拿有用的。”妈妈说。“我们得玩扮演穷人的游戏一段时间。”
"We're taking the useful ones, "said Mother."We've got to play at being poor for a bit."
璧山市交警姜飞说，照明系统在夜晚和雨雾天气非常有用。
Jiang Fei, a traffic officer in Bishan, said that the lighting system was very useful in the evenings and on rainy and foggy days.
“这没有用；我学不会。”他低声对坐在他旁边的同伴说。
"It is of no use; I cannot learn." he said in a whisper to a companion who sat near him.
他解释说：“如果我不能表达我的想法，那它对任何人都没有用处。”
"My idea is no use to anyone if I can't express it," he explained.
俄克拉荷马州养牛人协会副会长迈克尔·凯尔西·帕里斯说，鉴于人们对偷牛的担忧不断上升，机器人可能会非常有用。
Michael Kelsey Paris, vice president of the Oklahoma Cattlemen's Association, said a robot could be extremely useful given rising concerns about cattle theft.
当一篇侧重理论的文章摆在面前，无论它多么优秀，人们还是会抱怨说那些信息并不“有用”。
When an article focuses on theory, no matter how brilliant it is, people complain that the information isn’t “useful”.
“我听到过很多有老年痴呆症的人说，他们想成为有用的人，”摩根说。
"I hear over and over again from people with Alzheimer's that they want to be useful," Morgan says.
他接着说，“我会找些有用的人，我并不是特别关心他们的性别或者团体。
He went on, “I’m going to find people who are helpful, and I don’t particularly care what gender they are or what company they are.
克里斯塔尔博士说，有效和有用之间的二分法最后可能变成假的。
In the end, says Dr Krystal, the dichotomy between the valid and the useful may turn out to be a false one.
“我想做一些有用的事儿，”他说。
它们非常有用，比如说，能让我们更好地了解物质的表层属性。
They are very useful, for example, in understanding the properties of material surfaces.
对批评者，她回应说：“这招确实有用。”
很多时候我们都像这位淘金者，也就是说，我们没有用足够的时间来为我们的行动做准备。
We often are like this gold digger. That is to say, we do not take enough time to prepare for our actions.
大约60%的应用程序用户称他们在近一个月内使用过游戏应用程序，52%的人说他们有用来看新闻或天气的应用，而51%的人说他们使用地图应用程序。
About 60 percent of apps users said they'd used a game app in the past month, 52 percent said they'd used one to get news or weather and 51 percent said they'd used a map app.
我说那没有用，我看见过在受苦的人们而我想代表他们说话。
I said that it has no help, I see people suffering and I want to speak on their behalf.
勒文森说，“悲伤是一种很有用的情绪。
更一般地说，对于那些有用的分类系统，和容易判断的分类系统，分类学习都适用。
More generally, classification learning is appropriate for any problem where deducing a classification is useful and the classification is easy to determine.
一旦你写好了说稿，最有用的无疑是三个词：练习、练习、再练习。
Once you have that great speech written, the three Ps are invaluable: practice, practice, practice.
“这对帮助收集如听音乐这些常见行为的线索的人非常有用。”他说。
"It may be valuable for people to help pick up cues for common behaviors like listening to music," he said.
不过，任凭她怎么说都没有用。
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