Combinatorial Theory is exceptionally useful in the real world.组合论在现实世界中格外有用.Combinatorial theory is widely regarded as the most delightful branch of mathematics.人们普遍认为组合论是数学中最令人喜爱的分支.This is a combinatorial problem in c...
He felt her familiar briskness, and he knew that it was all over.他感觉到了她一贯的爽快作风，他明白一切都结束了。With determined briskness, Amy stood up and put their cups back on the tray.埃米干脆利落地站起身来，把他们的杯子放回到盘子里。The briskness with which he we...
她一气之下竟然将信撕碎了.She was so angry that she actually tore up the letter.他把衣服撕碎了.He tore up the clothes.他把撕碎的画拼起来.He pieced together the torn - up drawings....
She flicked a crumb off the corner of her mouth.她擦掉嘴角的面包屑。She sighed and flicked a dishcloth at the counter.她叹了一口气，然后用洗碗布轻掸着柜台。Alan stretched out his hand and flicked the letter away.艾伦伸手把信拂开了。...