in common:共同的
What do they have in common?
他們有什么共同點呢？
I darted left and saw that, according to facebook, we had over 20 friends in common.
我迅速瞄回左邊，發(fā)現(xiàn)根據(jù)facebook的統(tǒng)計，我們擁有20多個共同的朋友。

miss out: (被)遺忘；(被)略去
Many modern humans miss out on this, as we spend our days in constructed environments.
但許多現(xiàn)代人卻忽略了這一點，因為他們生活在建造的環(huán)境里。
And for those of us who spend entirely too much time in social networks, having these gadgets on hand means we won't miss out on the important information that matters most.
而對于那些在社交網(wǎng)絡上耗費太多光陰的人來說，手頭有這些小工具即意味著這些人不會再錯失那些極其重要的信息了。

at the risk of: 冒…風險
It may never do so, even at the risk of being bombed.
他可能即便冒著被轟炸的危險也不這樣做。