[ U ] the increase in something's speed, or its ability to go faster增速,加快;加速性能
An older car will have poor acceleration.旧车的加速性能差。
High winds significantly hampered the plane's acceleration.强风严重影响了飞机的加速。
[ S or U ] the increase in the speed at which something happens加速
The acceleration in the decline of manufacturing industry began several years ago.制造业的加速衰退从几年前就开始了。