The precision①cover 英 ['kʌvə] 美 ['kʌvɚ] n. 封面，封皮；盖子；掩蔽物 precision 英 [prɪ'sɪʒ(ə)n] 美 [prɪ'sɪʒn]n. 精度，[数] 精密度；精确 adj. 精密的，精确的catkin 英 ['kætkɪn] 美 ['kætkɪn] n. [植] 柔荑花序（如柳絮等）of pain and the blurriness②crack 英 [kræk] 美 [kræk] vt. 使破裂；打开；变声vi. 破裂；爆裂blurriness n. 模糊强度 fl oss 英 [fl ɒs] 美 [fl ɔs] n. 牙线；丝绵；乱丝of joy. I'm thinking how precise people are when they describe their pain in a doctor's offi ce.Even those who haven't learned to read and write are precise:"This one's a throbbing③throbbing ['θrɒbɪŋ] adj. 悸动的；跳动的 n. 跳动，激动 hasten 英 ['heɪs(ə)n] 美 ['hesn]vt. 加速；使赶紧；催促vi. 赶快；急忙pain, that one's a wrenching pain④a wrenching pain揪心的痛苦 sparse 英 [spɑːs] 美 [spɑrs] adj. 稀疏的；稀少的, this one gnaws⑤gnaw英 [nɔː] 美 [nɔ] vt. 咬；折磨；侵蚀 vi. 咬；折磨；侵蚀 twig 英 [twɪg] 美 [twɪɡ] vi. 理解 vt. 理解 n. 小枝；嫩枝；末梢, that one burns,this is a sharp pain and that-a dull one. Right here.Precisely here, yes, yes." Joy blurs everything. I've heard people say after nights of love and feasting,"It was great, I was in seventh heaven." Even the spaceman who fl oated in outer space, tethered⑥tether英 ['teðə] 美 ['teðər]n. 范围；系链；拴绳 vt. 用绳或链拴住 silken 英 ['sɪlk(ə)n] 美 ['sɪlkən] adj. 绸的；柔软的；丝制的to a spaceship, could say only, "Great, wonderful,I have no words."The blurriness of joy and the precision of pain —I want to describe,with a sharp pain's precision, happiness and blurry joy. I learned to speak among the pains.