gapon Basic wordsalso onCEFR Intermediate (B1)? CEFR Upper intermediate (B2)? Recommendations (Future)? Band 3 (BND3)? 缝隙,缺口,间断 gaps gaps(noun) 差异,缝隙(gap的复数形式),缺口 gap gap(noun) 缝隙,缺口,间断 Forms noun gaps gap