For implementers, the locking model adds a fair amount of non-trivial internal bookkeeping. Every operation must check lock state, readers must be tracked, and the interplay between locks, cancellation, and error states creates a matrix of edge cases that must all be handled correctly.
美國學者戈登表示，該條文原意在保護美國企業，避免受到依賴強迫或監獄勞動的進口商品競爭，如今也成為美國調查企業海外供應鏈勞動條件的重要工具。
，这一点在旺商聊官方下载中也有详细论述
"It's a very empathetic place," she says of Reddit. "For my wedding, I've found help emotionally, logistically and inspiration-wise."
for storage in self.storages: