Explicit layout: Either specify the offset of each field or specify the class size and the packing size.

显式布局：指定每个字段的偏移量，或者指定类大小和封装大小。

youdao

We have sent out our photo's of eyelashes and packing to you today via 1st class mail.

今天按第一类邮件邮寄了我们的睫毛图片和包装。

youdao

If there are 5 minutes left before the end of a study-by-oneself class, many will choose to stop working, packing their bag and preparing to leave.

如果离下自习的时间还有5分钟，很多人会选择放弃，收拾书包离开教室。

youdao

According to Retro Sound, the Model Two is the only radio made specifically for vintage autos that carries the Made-for-iPod designation, and the only one in its class packing hands-free call features as well.

ENGADGET

It was a Monday, and the cafeteria was filled with kids, some eating breakfast, some waiting for buses to drive them to programs at other schools, some packing up for gym class.

NEWYORKER: Battleground America