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281. stimulus n. 刺激 282. straightforward a. 坦率的 a ~ reply 283. stubborn a. 倔强的 284. stumble v. 绊倒 285. subordinate a. 从属的 286. subscribe to v. 订阅 287. subsidy n. 补贴 288. subtle a. 微妙的 the ~ difference of the twowords 289. supervise v. 监督 290. suppress v. 镇压; 抑制 291. tangle with v. 争吵, 纠葛 292. tariff n. 关税 293. tease v. 取笑 294. temperament n. 气质 295. tempt v. 引诱 296. tentative a. 试探的 297. terminate v. 终止 298. texture n. 质地 299. threshold n. 开端 on the ~ of 300. timid a. 胆小的 | 
