单词 low-grade 释义 low-grade, a.[low a. 20.]a. Of low or inferior quality.1878[see high-grade a.].1879H. George Progr. & Pov. iii. vi. (1881) 191 It is not low wages which will cause the working of low-grade ore.1899Jrnl. R. Agric. Soc. Mar. 133 Maize f...