Giving your host a gift is not just a social nicety in some cultures-it s expected.

在某些文化中，送主人礼物不只是社交礼节——还是必要的。

youdao

Even though EC2's charges are reasonable (some instances are as little as 10 cents an hour), you don't want to just start an AMI and leave it running indefinitely.

即使EC2的收费很合理(有些实例甚至一小时10美分)，您也不会希望启动一个AMI并让它随意运行。

youdao

In some ways it 's just a mimic of an old-school snail mail chain letter.

在某些方面，这只是一个模仿的旧学校蜗牛邮件连锁信。

youdao

RYAN: "Well,it's getting toward the end of the week. So I just called some friends.

VOA: special.2010.06.25

We could just collect a bunch of data. For a material .What's the volume it occupies at some pressure and temperature?

对一种物质我们可以得到一系列测量数据,在给定的温度和气压下,它的体积是什么？

麻省理工公开课 - 热力学与动力学课程节选

It's just some Friday nights they have raids and they can't come out and go out to the bars with us.

他们只在某些周五的晚上玩游戏组队突袭，所以他们就不能出来和我们去酒吧。

电子游戏 - SpeakingMax英语口语达人

But part of it is starting with awareness and making sure that people see the faces of these families -- through you, you know, so that it's not just some abstract story, but there's a real kid and real families behind it.

WHITEHOUSE: Roundtable with the First Lady and Mary's Center Teen Program | The White House

HUNTER-GAULT: Well, of course, Ghana is a classic example of this new generation of African journalists who are trying to take control of their own story, and yet also trying to make sure that it's not just some PR campaign that they conduct.

NPR: Gault Book Details 'Africa's Renaissance'

Technically it's not a fruit, but it's just as sweet, according to some.

NPR: Summer Food: Blueberries, Texas Caviar, Tomatoes