四级词汇

To ask earnestly or humbly; to ask for money or charity

恳求，乞求；乞讨

To financially support an event or person; a person or company that provides such support

赞助；资助；赞助商

Of second rank or importance; derived from something primary

次要的；中等的；从属的

To sell goods to another country; a product sold abroad

出口，输出；出口商品

Based on experiments; new and not yet fully tested

实验的，试验性的

To shut or hit with great force and noise; a forceful impact

砰地关上；猛击；砰然声

An advanced society with developed culture and institutions

文明，文明社会

To change from solid to liquid by heat; to dissolve or soften

（使）融化，溶解；消散

Twelve o'clock at night; the middle of the night

午夜，子夜

A smoothly bending line or shape; a bend in a road; to bend gradually

曲线；弯道；弯曲

To give someone the right to do something; to give a title to a work

给予权利；给…命名

Clearly seen or understood; obvious

明显的，显而易见的

The study of correct reasoning; a rational and sensible way of thinking

逻辑；逻辑学；推理

To prevent someone or something from entering or being included

排除，排斥；拒之门外

Unpleasantly rough or grating; severe or cruel

粗糙的，刺耳的；严厉的，苛刻的

A long narrow passage in a building; a narrow strip of land connecting two areas

走廊，通道；狭长地带

To welcome or acknowledge someone in a friendly way

问候，打招呼；迎接

The inside of a building or enclosed space; situated on the inside or inland

内部，室内；内部的，内陆的

The sale of goods directly to consumers; to sell in small quantities to the public

零售，零售业；零售的

A legless reptile; a treacherous person; to move in a winding route

蛇；阴险的人；蜿蜒行进

Lack of strength; a fault or shortcoming; a strong fondness

虚弱；弱点；特别喜爱

A domesticated farm animal raised for meat; a greedy or dirty person

猪；贪婪肮脏的人

Relating to ancient Greek or Roman culture; of formal Western music; following established principles

古典的；经典的；正统的

To bend material over on itself; a crease or bend made by folding

折叠；折痕

Unverified information spread by word of mouth; to spread such information

谣言，传闻；谣传

To turn in the opposite direction; the opposite of something; going backwards

反转；相反；倒退

Not able to be found; absent when expected

失踪的；不见的；缺少的

A sudden burst of light; to shine briefly; a very short moment

闪光；闪现；一瞬间

Consistently trustworthy and dependable

可靠的，可信赖的

A feeling of great enthusiasm and eagerness

兴奋，激动

An upright typeface; relating to Roman script or numerals

罗马体；罗马字体的

The art of designing buildings; a style of building; the structure of a system

建筑学；建筑风格；系统架构

Happening sometimes but not regularly or often

偶尔的，不定期的

The joint of the arm; to push with the elbow

手肘；用手肘推开

Causing or capable of causing death; extremely

致命的；极度地

To make someone unclear in mind; to mix up two things

使困惑；混淆，弄错

A powered fixed-wing aircraft

飞机

Happening once a month; every month; a monthly publication

每月的；每月一次；月刊

A flat-billed water bird; to quickly lower one's head to avoid something

鸭子；低头躲避；逃避

A measured amount of medicine taken at one time; to administer such an amount

一剂（药），用量；给药

A formal spoken lesson; to teach or scold by speaking at length

讲座；演讲；训诫

A filling between two slices of bread; to squeeze between two things

三明治；把…夹在中间

A residential area on the outskirts of a city

郊区；城郊

The main stem of a tree; the human torso; a large luggage box; an elephant's nose

树干；躯干；大旅行箱；象鼻

To encourage or inspire someone to act

激励，激发积极性

To cause food to pass into the stomach; a small migratory bird

吞咽；燕子

To cause to become; to perform or translate; a plaster coating or rendered image

使成为；表演；翻译；抹灰层

A device or scheme to catch someone or something; to ensnare

陷阱，圈套；诱捕，使陷入困境