We should revise our protectionist practices in trade, and promote free trade and competition.
我们应该修改我们的贸易保护主义做法,推广自由贸易和竞争。
Finding planets is proving hard enough, but finding life on them will prove infinitely more difficult.
寻找行星证明相当困难,但是要在行星上发现生命会变得无比艰难。