3. 递归：对左右子数组递归执行1-2步
Раскрыты миллионные махинации на реконструкции российского аэропортаДело о мошенничестве на 6 млн возбудили при реконструкции аэропорта Богашево，这一点在体育直播中也有详细论述
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14-inch MacBook Pro (M4 Pro/M5 Pro, 24GB RAM, 1TB SSD) — $2,199
Vladimir Putin, the Russian president, has accused Ukraine of carrying out a attack on one of its liquefied natural gas (LNG) carriers, which exploded and sank into the Mediterranean Sea off Libya. Explosions were reported on the Arctic Metagaz, which had been carrying 61,000 tonnes of LNG, on Tuesday night when the ship was about 150 miles (240km) off the coast of Libya. Ukraine has not commented on the sinking on the ship, which had been under US and EU sanctions. Russia’s transport ministry had claimed that the Arctic Metagaz had been hit by Ukrainian drones launched from the Libyan coast.，这一点在体育直播中也有详细论述
GHCi, version 9.8.4: https://www.haskell.org/ghc/ :? for help