Unfortunately, these parcels are defined by 2d coordinates, so it's really a column that extends infinitely.
遗憾的是,这些媒体包通过2d坐标定义,因此媒体包实际上是无限扩展的列。
We should send all these parcels off by noon.
这些包裹应该在中午以前全部寄出。
The students can easily find their parcels according to a bar code distributed by the network system that the center operates.
根据由中心操作的网络系统分发的条形码,学生可以轻易地找到他们的包裹。
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