Your host may welcome you with a kiss on both cheeks.

主人可能会亲吻你的双颊以示欢迎。

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Though it is not necessarily expected that you give a gift to your host, it is considered polite to do so, especially if you have been invited for a meal.

虽然不一定要送礼物给主人，但这样做被视为一种礼貌，尤其当你被邀请吃饭的时候。

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When meetings are one-to-one, if your host offers you coffee, you should refuse.

当一对一会面时，如果主人给你提供咖啡，你应该拒绝。

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So, when the right signal is received, the right T-cell finds your host cell with a foreign virus in it, the first thing that happens is that this T-cell becomes activated and it starts reproducing, making more copies of itself.

所以 当接收到正确的信号,恰当的T细胞寻觅到,感染外源病毒的细胞时,首先发生的是,T细胞被激活并开始增殖,制造更多自身拷贝

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Or, if you are at a party and you're ready to leave but you've left your bag with the host,

又或者，你在一个派对上，你准备要走了，但是你刚才把你的包放在派对主人那里了，

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By extending your time horizon to three years, or four years,or five years, it opens up a whole host of investment opportunities that aren't available to people that are playing this silly,short-term game.

只有通过将投资延长至三年,四年乃至五年,才会出现大量的获利机会,沉迷于愚蠢的短线操作,是无法得到这些机会的

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The greatest compliment you can pay your host is to be attentive, relaxed, and appreciative.

FORBES: Essential Guide To The Business Lunch

It's important to bear in mind the cultural norms of your host and their guests.

WSJ: The Perfect Guest at a Dinner Party

Ever have a website taken down by your host in response to an unsubstantiated complaint?

FORBES: The Problem With Patents