fastadj.快的；迅速的；紧的；牢固的；放荡的adv.快速地；紧紧地；放荡地；深深地n.斋戒；禁食；系泊用具v.斋戒；禁食fastland高潮面以上的陆地(尤指靠近水边的高而干燥的陆地)

1. Relax your muscles before starting to run.
   起跑前应将肌肉放松。
2. He should adjust his starting blocks.
   他应当调整一下起跑器。