Many hearing-impaired people use sign languages, in which gestures do the work of the sound system of spoken languages.
1. hearing-impaired (adj.) unable to hear as well as most people can. Many people prefer this word to deaf.
impair [ɪmˋpɛr] (v.) [ formal ] to make something less good or effective, especially by causing damage that affects the way something works
Example: The condition does not seem to impair his ability to work.
impaired (adj.) if your body's ability to do something is impaired, you are not fully able to do it
Example: methods of correcting impaired vision 矯正受損視力的方法
Example: Signing is provided for the hearing-impaired.
impairment (n.) the fact that a part of your body is unable to do something fully
Languages are always changing and evolving, but they change quite slowly.
2. evolve [ɪˋvɑlv] (v.) to gradually change and develop over a period of time
Example: Computer software will continue to evolve in response to users' needs.
Example: The research project evolved from a concept first proposed in 1995.
(v.) when a type of plant or animal evolves, its physical form changes over a long period of time
Example: Modern humans evolved from monkeys over millions of years.
evolution (n.) the way in which something gradually changes and develops
evolutionary (adj.) connected with a gradual process of change and development
The English word “meat” once referred to food in general.
3. refer to [ phrasal vb ] [ refer to sth ] to describe something or be about something
Example: These notes refer to the case of a teenage murderer.
[ refer to sth/ sb ] to mention someone or something when you are speaking or writing
Example: She referred to the subject several times during her speech.
Example: When I said someone was stupid, I didn't refer to you.
Example: In some countries, students refer to their professors by their first names.
Example: Jack was careful not to refer to the woman by name.
[ refer to sb/ sth as ]
Example: We refer to Da Vinci as the greatest genius of all time.
[ refer to sth ] [ formal ] to look at a book, map etc for information
Example: If you meet a new word, please refer to the dictionary.
= consult the dictionary.
= look it up in the dictionary.
[ refer sb to sb/ sth ] to send someone to another person or place in order to get help, information, or advice
Example: The doctor referred me to a skin specialist.
This is especially bewildering for older people.
4. bewilder [bɪˋwɪldɚ] (v.) to make someone feel confused
Example: Too much choice just bewilders you.
bewildering (adj.) a bewildering situation is confusing and difficult to understand
Example: Her first day at work was extremely bewildering. 她上班的第一天手足無措。
(adj.) a bewildering range or set of things is very large and offers too many choices
Example: a bewildering array of vegetables
bewildered (adj.) confused and not certain what to do
Example: Many of the refugees looked bewildered and frightened.
bewilderment (n.) a feeling of being extremely confused
Example: He stared at us in complete bewilderment.
Specialists and experts from many different fields are needed to work on these complex schemes.
5. scheme (n.) a plan developed by a government or large organization in order to provide a particular service for people
Example: The government's biggest scheme is to build a dam to store water for agriculture.
Example: The proposed scheme should solve the parking problem.
Example: Have you joined the company pension scheme?
(n.) a plan for achieving something, especially something illegal or dishonest
Example: It's sounds like just another crazy money-making scheme.
(v.) to make secret plans to achieve something, especially in a dishonest way: plot +against
Example: She's convinced that they're scheming against her.
scheme to do sth
Example: The king's enemies were scheming to take power from him.
schemer (n.), scheming (adj.)