class DatabaseStorage {
Что думаешь? Оцени!，这一点在heLLoword翻译官方下载中也有详细论述
，更多细节参见heLLoword翻译官方下载
const validatePromo = (cartContents) = {。旺商聊官方下载对此有专业解读
if (bucketSize == 0) continue;
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