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641. on the sly 偷偷地 642. smell of 有的气味 643. be sorry aboutfor 懊悔的,后悔的,难过的 644. speak ill of 说的坏话; speak well of 说的好话 645. specialize in 专门研究, 专攻 646. in spite of 尽管 647. on the pot在现场, 在出事地点; 或 立即 648. take a stand against 采取某种立场反对 take a stand for 采取某种立场支持 649. stare at 目不转睛地看, 凝视, 盯着 650. in step 步伐一致; out of step 步伐不齐 651. stick sth. on 把贴在上 652. stick to 粘着, 坚持 653. stick at 继续勤奋地致力于stick ones work 坚持工作; stick at ones books 勤奋读书 654. stick to 坚持; stick to ones promise 比喻食言 stick to ones friend 忠于朋友 655. in stock 有.货 656. be strict with 对严格要求 657. bego on strike 罢工 658. subjectto使受..到 subject to 易受到的 659. submitto 提交 660. substitutefor 以代替 661. suffer from 患 受苦痛 662. be suitable for 合适的 663. in sum 大体上, 总之 664. supply sb. with sth 向某人提供某物 | 
