孤立 gūlì HSK7 isolate Definitions Defs Origin Strokes Stroke Words Sentences Sents 孤立无援 gūlìwúyuán isolated and helpless isolated and without help孤立子 gūlìzǐ soliton soliton (physics)孤立子波 gūlìzǐbō instanton instanton (math.)