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This is not a cheap way to do your shopping, however, as your host will, quite correctly, expect you to respond by presenting him with a gift of equal worth and beauty.

然而这不是一种便宜的购物方式，因为主人会非常得体地期待你送他一份同等价值、同样漂亮的礼物作为回赠。

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If you visit an Arab family's home, don't admire anything valuable because your host will feel he should give it to you as a present.

如果你去阿拉伯人家做客，不要欣赏任何有价值的东西，因为主人会觉得他应该把它作为礼物送给你。

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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