The situation in the lower tiers is even more volatile .
在低层次的博览会中情况更加不清楚。
Typically , many diabetics progress through three or four treatment tiers , ultimately adding insulin injections to help control their blood sugar .
通常说来,许多糖尿病患者会依次经历三级或四级治疗方案,最终会加上胰岛素注射来控制他们的血糖。
Contractor shall maintain an effective system for continuity of order identification that ensures drawings , specifications , and inspection requirements are properly transmitted to suppliers at all tiers of order placement .
承包商应维持有效地订单识别系统,保证供应商下订单的所有层级正确传递图纸、规范和检查要求。
An ancient galley equipped with two tiers of oars on each side .