This clause providesagainst any unauthorized absence from duty.
这一条条文禁止任何未经批准的缺勤。
2
Therefore, the research on animal products quality safety early-warning providesagainst possible trouble, which has important theoretical and practical significance.
因此，开展畜产品质量安全预警研究，防患于未然，具有重要的理论与实践意义。
3
The Spanish case provides arguments both for and against monarchy.