1.wingspan n. 翼展;翼幅
The bird has a 1-metre wingspan.
这只鸟的翼幅为1米 。
2.autopilot n. [航] 自动驾驶仪(等于automatic pilot)
The aircraft engines, autopilot, and navigation system are absolutely reliable.
飞机发动机,自动驾驶仪和导航系统绝对可靠 。
3.appliance n. 器具;器械;装置
He could also learn to use the vacuum cleaner, the washing machine and other household appliances.
他还能学习使用吸尘器、洗衣机和其他家用电器 。