cell
细胞；牢房
It is said that millions of our skin cells die every day.
据说我们每天都会有几百万个皮肤细胞死掉。
The local jail only has 2 or 3 cells.
本地监狱只有2或3间牢房。
organ
器官；风琴；机构
The heart and lungs are organ.
心和肺是器官。
He played us a tune on the organ.
他用风琴为我们弹奏了一首曲子。
Parliament is the chief organ of government in the UK.
在英国，议会是主要的政府机构。
income
收入
Doctors in America have high incomes.
美国的医生收入很高。
instrument
乐器；工具（尤指仪器）
How many musical instruments can you play?
你会演奏几种乐器？
A scale is a commonly used instrument in science.
量尺是科学中常用的工具。
reader
读者
Magazines like to receive letters from their readers.
杂志喜欢收到读者的来信。
listener
听众；倾听者
This radio program has many young listeners.
这个电台节目有很多年轻听众。
Being a good listener helps establish friendship.
做个好的倾听者有助于建立友谊。
speaker
演说者；讲（某种）语言的人；扬声器，音响喇叭
The speaker seemed a little too nervous.
主讲人看起来似乎有点紧张过头。
Is he a native speaker or English?
他是英语母语人士吗？
My computer's speakers were out of order.
我电脑的喇叭组故障了。
skill
技巧，技能
Sam plays the piano with great ki11.
山姆弹钢琴的技巧非常好。
skilled
熟练的；有技术的
A skilled engineer takes four years to train.
熟练的工程师要花4年来训练。
We need people (who are) skilled in drawing for this job.
我们需要有绘画技术的人来做这个工作。
skillful
擅长的；高明的
They are skillful at this game.
他们擅长这种游戏。
We need a skillful doctor.
我们需要一位高明的医生。