acoustic

n [sing] = acoustics 1: The hall has a fine acoustic. 这个大厅的传音效果很好.

acid, acid rain, acidic, acidify, acidity, acidly, acidosis, acidulated, acidulous, acknowledge, acknowledged, acknowledgement, acknowledgement (also acknowledgment), acknowledging, acknowledgment, acme, acne, acolyte, aconite, acorn, acoustically, acoustics, acquaint, acquaintance, acquaintant, acquainted, acquaintence, acquiesce, acquiescence, acquiescent, acquire, acquired, acquisition, acquisitive, acquisitively, acquisitiveness, acquit, acquittal, acre, acreage,