複選題21.(AB) melting (AC) likened (AD) conversion (AE) notable (BC) influx (BD) surrounding (BE) elevated (CD) deposition (CE) minor (DE) generated (ABC) softening (ABD) additional(AB) melting (AC) likened (AD) conversion (AE) notable (BC) influx (BD) surrounding (BE) elevated (CD) deposition (CE) minor (DE) generated (ABC) softening (ABD) additional