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 (=despite) 尽管
647.on the pot (=at the place of the action) 在现场，在出事地点；或 (=at once) 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 (=continue to work hard 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 (=refuse to leave or change) 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.be/go on strike 罢工
658.subject……to (=cause……to experience) 使受……到
subject (adj.) to 易受到……的
659.submit……to 提交
660.substitute……for 以……代替……
661.suffer from 患……病；受……苦痛
662.be suitable for (=fit) 合适……的
663.in sum 大体上，总之
664.supply sb. with sth 向某人提供某物
665.superior to 优于……，比……好
666.in support of 以便支持
667.be sure of (=have no doubt; certain) 确信的
668.for sure/certain (certainly， definitely) 肯定地，有把握地说
669.make sure about 弄清，弄确实
670.be surprised at 对……惊奇；take……by surprise 使……惊奇；to ones surprise 使某人惊奇
671.suspect sb. of 疑心某犯有……
672.be suspicious of (=not trusting) 对……有疑心
673.by sympathetic to/towards 对……同情，赞同
674.sympathize with sb. or sth. 对……表示同情
675.be in sympathy with 赞同，同情