of low quality or strength 质量差的,劣等的;低强度的 low-grade steel. 劣质钢铁。 low-grade fuels. 劣质燃料。 ■at a low level in a salary or employment structure 低级的,低等的 low-grade clerical jobs. 低级牧师工作。 ■(of a medical condition) of a less serious kind; minor (医疗状况)不严重的;轻微的 a low-grade malignancy. (程度)轻度恶性。