是指随同产品出售而不单独计价的包装物。
Accompanying the product is priced separately sold without packaging.
美国是唯一需要选民单独注册，而不是自动注册的国家之一，很多美国人从不单独注册。
The US is one of the only countries that requires voters to register separately, rather than automatically signing them up, a step many Americans never take.
单个的石柱从不单独出现，而只作为一系列相互穿插的部分在岩石的横截面上呈现出之字裂痕。
The individual columns never appear singly but occur as a succession of interpenetrations that in cross section make a zigzag suture across the face of the stone.
单个的石柱从不单独出现，而只作为一系列相互穿插的部分在岩石的横截面上呈现出之字裂痕。
The individual columns never appear singly but occur as a succession of interpenetrations that in cross section make a zigzag suture across the face of the stone.
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