| 词汇 | complementary angle |
| 释义 | complementary angleBrE /ˌkɒmplɪmentri ˈæŋɡl/ NAmE /ˌkɑːmplɪmentri ˈæŋɡl/ noun (geometry几何) either of two angles which together make 90° 余角 ➡ compare supplementary angle |
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