คำศัพท์ TOEFL

An official effort to count an entire population and collect information about its characteristics.

人口普查；对全体人口进行的官方统计

very important to the main issue or purpose being considered

核心的；对主要问题或目标十分重要的

government directed from a single central authority

中央集权统治

inward net force component for curved motion

向心力

inorganic nonmetallic material often processed with heat

陶瓷材料；陶瓷

grass grown for edible grain

谷类作物

Feeling no doubt that something is true or will happen.

确信的；对某事属实或将会发生没有疑问的

A state of having no doubt about something or treating it as definitely known.

确定性；确信；对某事没有疑问或将其视为已明确知晓的状态

A qualification awarded after completing a defined course or shorter program of study.

课程结业证书；证书资格

to question whether a claim, assumption, or accepted view is correct or justified

质疑；对……提出异议

To switch from one main subject of university study to another.

转专业；更换主修专业

A person or person-like figure represented in a story, play, or other fictional work.

人物；故事、戏剧等虚构作品中的角色

a quality that is typical of, or helps distinguish, a person, thing, or group

特征；特点

To show the qualities of a fictional character through description, speech, actions, or other narrative choices.

刻画人物；通过描写、语言或行动表现虚构人物的特征

Intended to help people in need or support a public-benefit cause.

慈善的；旨在帮助有需要者或支持公益的

A software system that interacts with users through conversational text or speech.

聊天机器人；通过文字或语音对话与用户交互的软件系统

To break the rules of a test or assignment in order to gain an unfair advantage.

作弊；通过违反考试或作业规则获得不公平优势

to ask a person or organization to confirm information or whether something is acceptable

向……确认；与……核实

arrangements allowing institutions to limit one another's powers

制衡机制；相互制约

interaction holding atoms or ions together

化学键

symbolic representation of chemical composition

化学式

transformation of substances into different substances

化学反应

green pigment involved in photosynthesis

叶绿素

The act or result of selecting between possibilities.

选择；在多个可能方案之间挑选的行为或结果

create and arrange the movements of a dance

编舞；创作和编排舞者的动作

creation or arrangement of movements for dance

编舞；舞蹈动作的创作与编排或编排成的动作序列

cellular structure carrying genetic material

染色体

persisting for long time or recurring

慢性的；长期持续的

arranged in the order events happened

按时间顺序的