1. The concept of man versus machine is at least as old as the industrial revolution, but this phenomenon tends to be most acutely felt during economic downturns and fragile recoveries. “人与机器竞争”这一概念至少与工业革命一样古老了，但在经济衰退期和脆弱的复苏期中，这种现象往往最为明显。
2. But recoveries rarely run smoothly. 但经济复苏很少一路平坦毫无波折。
3. That isn't necessarily unusual for recoveries. 对经济复苏而言，这倒未必是种反常现象。
4. That is one reason post-crisis recoveries are weak. 那是后危机时代经济复苏疲弱的一个原因。
5. In most rich countries recoveries are still fragile. 大部分富国的复苏还很脆弱。
