一封
一封一封[yī fēng]1.■a (letter):我收到一封有礼貌的感谢信。I received a gracious letter of acknowledgement.
热门单词
- 一次锌-银电池 primary silver-zinc battery;
- 一步登天
- 一粥一饭
- 万向节球 universal ball; universal joint;
- 万能军用汽车 all-purpose military vehicle;
- 万能牛头刨床 universal shaper;
- 万能电桥 universal bridge;
- 万能调整器 universal compressor;
- 万能轨距尺 universal track gauge;
- 三分
- 三枪三束彩色显像管 three-beam colour picture tube;
- 三次曲线 cubic curve; cubic;
- 三白草科 Saururaceae
- 三脚凳
- 三角形切口横条 arris rail;
- 三角形多元天线 multiwire-triatic antenna;
- 三针
- 上下配穴 {中医} coordination of the acupoints of the upper with those of the lower, superior-inferior point association;
- 上合
- 上导数
- 上扇
