| 释义 |
speed AHD[spēd] D.J.[spiːd]K.K.[spid] up to speed - Operating at maximum speed.以最快的速度运行
- Producing something or performing at an acceptable rate or level.以合适的速度或标准生产某物或执行某事
- Informal Fully informed of or conversant with:【非正式用语】 悉知的，熟悉的：I'm not up to speed on these issues yet.我对这些事情还不熟悉
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