1
a shield against sth
shield 常与 against 连用，表示防御某事物。
The immune system acts as a shield against infections.
免疫系统充当抵御感染的盾牌。
盾；盾牌
先理解核心含义，再看它在真实句子里的用法。
盾；盾牌
a piece of armor carried on the arm to protect against blows
The immune system acts as a shield against infections.
免疫系统充当抵御感染的盾牌。
任何起保护或防御作用的东西；防御；庇护；保护
Anything that protects or defends; defense; shelter; protection.
保护性的覆盖物或结构
a protective covering or structure
似盾牌的形状；通常为底尖、边向内弯曲的倒三角形,常用于警察徽章和公司标志
A shape like that of a shield; usually, an inverted triangle with sides that curve inward to form a pointed bottom, commonly used for police identifications and company logos.
手臂上佩戴的用于抵挡击打的甲胄
armor carried on the arm to intercept blows
The thick stone walls acted as a shield against the strong winds.
厚厚的石墙起到了抵御强风的作用。
Parents often try to be a shield for their children when life gets hard.
当生活艰难时，父母往往努力成为孩子的庇护。
The knight raised his shield to block the enemy's attack.
骑士举起盾牌抵挡敌人的攻击。
shield 常与 against 连用，表示防御某事物。
The immune system acts as a shield against infections.
免疫系统充当抵御感染的盾牌。
比喻用法，指在某种掩护或保护之下。
They advanced under the shield of darkness.
他们在黑暗的掩护下前进。
The new policy is a shield for vulnerable groups.
这项新政策是对弱势群体的保护。
Not this
He carried shield.
Use this
He carried a shield.
可数名词 'shield' 单数形式前需要不定冠词 'a'，中文学习者常因汉语中无冠词而遗漏。
Not this
The knights used three shield.
Use this
The knights used three shields.
'shield' 是可数名词，复数形式加 -s，中文学习者因汉语名词无单复数变化而漏加。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
防护盾
The knight raised his protective shield to block the arrow.
骑士举起防护盾挡住了箭。
人肉盾牌（指用他人作为防御）
The hostage was used as a human shield by the kidnappers.
人质被绑架者用作人肉盾牌。
防暴盾牌
Police officers carried riot shields to control the crowd.
警察携带防暴盾牌来控制人群。
持盾者
In ancient battles, a shield bearer protected the archer.
在古代战斗中，持盾者保护弓箭手。
盾墙（防御阵型）
The soldiers formed a shield wall to repel the attack.
士兵们组成盾墙以击退进攻。
抵御...的盾牌
Regular exercise is a shield against many diseases.
定期锻炼是抵御许多疾病的盾牌。
人体盾牌
The terrorists used children as human shields.
恐怖分子利用儿童作为人体盾牌。
在...的保护下
They acted under the shield of diplomatic immunity.
他们在外交豁免权的保护下行动。
升起护盾！
In Star Trek, the captain shouts 'Shields up!' when the ship is under attack.
在《星际迷航》中，当飞船受到攻击时，船长会大喊'升起护盾！'。
他有一面盾牌！
Thor exclaims 'He's got a shield!' when Captain America blocks his hammer in The Avengers.
在《复仇者联盟》中，当美国队长用盾牌挡住雷神的锤子时，雷神惊呼'他有一面盾牌！'。
Use shield naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象一面坚固的盾牌（shield）保护你免受伤害。
在军事、历史或奇幻题材中常指手持的防御武器；在科技、生物领域可指保护罩或甲壳。通常用于中性或正式语境。
可数名词，常与against连用，表示防护物。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.