a large piece of metal or leather carried by soldiers in the past to protect the body when fighting 盾（牌） She did not recognize the coat of arms on his shield. 她没有认出他盾牌上的盾徽。
Oxford Collocations Dictionaryadjective- riot
- lower
- raise
- be armed with
- …
- behind a/the shield
- on a/the shield
- (also riot shield)
a piece of equipment made from strong plastic, used by the police to protect themselves from angry crowds （警察的）盾形徽章 Oxford Collocations Dictionaryadjective- riot
- lower
- raise
- be armed with
- …
- behind a/the shield
- on a/the shield
- shield (against something)
a person or thing used to protect somebody/something, especially by forming a barrier 保护人；保护物；掩护物；屏障 Water is not an effective shield against the sun's more harmful rays. 水不能有效阻挡太阳中更有害的射线。 She hid her true feelings behind a shield of cold indifference. 她把自己的真实感情掩藏在一副冷漠的外表后面。
Extra ExamplesThe car had acted as a shield, protecting him from the blast. 有那辆车挡在前面，他才没有被炸伤。 The ozone layer forms a shield against harmful solar rays. 臭氧层形成了阻挡太阳有害射线的防护层。 The software provides a shield against hackers, worms and viruses. 该软件能够防御电脑黑客、蠕虫和病毒的攻击。
Oxford Collocations Dictionaryadjective- defensive
- protective
- human
- …
- use somebody/something as
- form
- provide
- …
- protect
- shield against
a plate or screen that protects a machine or the person using it from damage or injury （保护机器和操作者的）护罩，防护屏，挡板 A heat shield protects the worker’s hands. 隔热罩保护工人的手。
Oxford Collocations Dictionaryadjective- defensive
- protective
- human
- …
- use somebody/something as
- form
- provide
- …
- protect
- shield against
an object in the shape of a shield, given as a prize in a sports competition, etc. 盾形奖牌 
The prince presented the shield to the winners. 王子向获胜者颁发了盾牌。
a drawing or model of a shield showing a coat of arms 盾形纹徽；盾形徽章 - (North American English)
a police officer’s badge （警察的）盾形徽章
Word OriginOld English scild (noun), scildan (verb), of Germanic origin; related to Dutch schild and German Schild, from a base meaning ‘divide, separate’.