# Manage internal data-model
（二）承运人预计满足托运人的要求将产生额外费用或者使承运人遭受经济损失，要求托运人提供相应担保，托运人未提供担保；
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// 创建临时数组存储左子数组（右子数组可直接用原数组）。业内人士推荐体育直播作为进阶阅读
// No BYOB request - allocate and enqueue a chunk
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