3 transform chain
“国内测评没啥用，买东西就买喜欢的品牌。按需购买。”
，这一点在heLLoword翻译官方下载中也有详细论述
She points out that blockchain-based tracking of a food at each point in the supply chain might be feasible for a product like South American bananas, but isn't feasible for a lasagne containing 50 ingredients from all over the world.
// 易错点3：未初始化默认值，可能导致res[i]为undefined