Acronym of create, read, update, delete; basic database operations.

“创建、读取、更新、删除”的缩写；数据库的基本操作。

Dirt, grime, or a sticky layer of gunk.

• Something of poor quality; junk.

污垢、脏物或黏糊的积垢。

• 质量很差的东西；劣质品。

To clog or foul with dirt or debris.

用脏物堵塞或弄脏。

Mild exclamation of annoyance or frustration.

表示懊恼或不快的轻微感叹。

Heavy, chopped-up, or wet snow that is hard to travel.

湿重、被碾乱的雪，行进或滑行困难。