scratch /skrætʃ/ I. vt. & vi. 抓，搔，扒： scratch a mosquito bite 搔蚊子咬处； scratch one’s back 搔背［考句］ He scratched his head, wondering how to solve the problem.他挠挠脑袋，思索该如何解决问题。‖II. n. ［c］ 1. 抓、搔、爬痕：It’s only a scratch. 只不过是点儿擦伤罢了。2. 用于习语 from scratch 完全从头开始：Can we fix the current computer system, or would it be better to start from scratch?我们能够修复现在的计算机系统吗，还是索性重新安装更为合适呢？up to scratch 达到（可以接受的）标准（见up条）