四级词汇

To become or make wider or more extensive

（使）变宽；扩大

A person who serves food and drinks to customers at tables in a restaurant or café

服务员；侍者

Individually; not together

分开地，单独地

Half of an academic year; one of two school terms

学期

The quality of being exact and accurate

精确，准确；精密度

On or to a lower floor of a building

在楼下；楼下的

Stiff and unable to bend; inflexible in opinions or rules

坚硬的，刚性的；严格的，刻板的

A sweet fruit spread; a blockage; to squeeze or force into a tight space

果酱；堵塞；塞入，挤进

To fall or roll end over end; a sudden clumsy fall

跌倒，翻滚；跌落

The number 18

数字十八

To spin around an axis; to take turns in a sequence

旋转；轮流

Impressively grand or splendid

壮丽的，宏伟的

To drag something sharp along a surface; a shallow wound or mark; a difficult situation

刮，擦；擦伤，刮痕；困境

Opposite in nature; the exact opposite; in opposition

相反的；对立的；相反地

Relating to sight, vision, or optics

视觉的，光学的

An emergency vehicle for transporting sick or injured people

救护车

Strange or unusual; belonging exclusively to one person or place

奇特的，怪异的；特有的，独特的

The feeling or state of being unhappy or sorrowful

悲伤；悲哀

Showing great excitement or eagerness

热情的，热心的

A person who formally applies for something

申请人；求职者

Not present; inattentive; to keep oneself away

缺席的，不在的；心不在焉的

That is to say; used to specify or clarify

即，也就是说

To restore to original condition; to extend or continue something such as a contract

更新；续订；恢复

Above one's head; ongoing business expenses not tied to production

在头顶上；经常性开支，间接费用

A large waterfowl; to poke someone's buttocks; to stimulate

鹅；捏臀部；刺激，促进

A soft juicy fruit with a large stone (n.); to inform on someone (v.)

桃子（名）；告发（动）

To give a brief account of the main points

概括；总结

To cause someone to feel fear or alarm

使害怕，使惊吓

Producing clear, powerful images; very bright in color

生动的；逼真的；色彩鲜艳的

A set of keys for operating a computer or musical instrument; to type on a keyboard

键盘；用键盘打字

A harmful or lethal substance; to kill or harm with poison

毒药；毒物；毒害；毒杀

A supporter of communism; relating to communism

共产主义者；共产主义的

A person who pays rent to use property owned by another

租户；房客；佃户

Extremely angry; violent or intense

狂怒的；猛烈的，激烈的

Without doubt; certainly

无疑地，确实地

To leave out or exclude something

省略；遗漏；删去

A person who governs; a flat measuring tool

统治者；直尺

Having high moral qualities; of aristocratic rank; a person of noble birth

高尚的；贵族的；贵族

An eight-legged predatory arthropod that spins webs

蜘蛛；网络爬虫程序

The state of being completely sure; something that is definitely true

确定性；必然的事情

Slightly wet; to make moist or reduce intensity

潮湿的；使潮湿；抑制

The words known by a person or used in a particular field; a word list

词汇量；词汇；词汇表

A negatively charged subatomic particle orbiting the atomic nucleus

电子

A scientist who specializes in physics

物理学家

The soft hair of sheep used to make yarn or fabric

羊毛；毛线；毛织物

A man whose job is to sell goods in a shop or to customers

男售货员，男推销员

To grow crops; to develop or nurture something

耕种，栽培；培养，陶冶

Great comfort and wealth; something expensive and not essential; very high quality

奢侈；豪华；奢侈品