We split a tube of toothpaste between us for dinner.
我们把一条牙膏分成一人一半，当作晚饭吃。
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Test tube experiments suggest that humans paid a high cost for developing immunity to this bug: it may have left us much more susceptible to another retrovirus, HIV.
I can't see how we'll ever retreat back to technologies that alienate us, just like we won't go back to buying cars that break down a lot or cathode ray tube TVs.