scratch v. 抓,搔,扒 The cat scratched me. 猫抓了我。 n. 抓,搔,抓痕 screen n. 屏幕;屏风,帘 vt. 掩蔽,遮蔽 screen sth. from sth. 遮蔽 ,以防 screw n. 螺丝 vt. 拧,拧紧 screw a lock on a door 用螺丝钉把锁装在门上 seal n. 封条;印,图章 stamp vt.(密)封 seal sth. off 封闭 secondary adj. 次要的,次等的,辅助的;中级的,第二的 secretary n. 秘书,书记,部长,大臣 section n. 章节;部分;部门,科;截面,剖面 secure adj. 安全的,可靠的;放心的 vt. 得到,获得 She has secured a good job. 她已获得了一个好工作。 vt. 使安全,保卫 be secure from / against sth. 免受 打扰或攻击 security n. 安全 select vt. 选择,挑选 adj. 精选的,选择的 selection n. 选择,挑选;精选品 selfish adj. 自私的,利己的 semester n. 学期 semiconductor n. 半导体 senate n. 参议院 senior adj. 资格老的,地位较高的 superior adj. 年长的 be senior to sb. 比某人年长或资深 sensible adj. 明智的,合情理的 reasonable , rational adj. 觉察的,知道的 He is sensible of the danger of his position. 他发觉他处境的危险。 sensitive adj. 敏感的;灵敏的 be sensitive to sb. / sth. 对 敏感 sequence n. 连续,接连,一连串;次序,顺序 series n. 一系列,连续;丛书 session n. 会议,一届会期;集会 setting n. 环境;调节 settlement n. 协议,解决 severe adj. 严重的;严厉的,严格的;严峻的,艰难的
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