n.[C]

1. 盾
2. 保护者；庇护者
3. 防护物；护罩，挡板
   Dark glasses is an effective shield against the glare.

   墨镜有效地阻隔强光保护眼睛。

4. 盾状物；盾形徽章
5. 【动】背甲，头胸甲；龟甲板

vt.

1. 保护；保卫[（+from）]
   Her hat shielded her eyes from the sun.

   她的帽子遮住太阳光保护她的眼睛。

2. 庇护；包庇；掩盖
   He lied to the court to shield his friend.

   他对法庭说谎以包庇自己的朋友。

3. 挡开，避开[（+off）]
   These trees will shield off arid winds and protect the fields.

   这些树林能挡住旱风，保护农田。

vi.

1. 保护，防御

n.

1. a broad piece of armour held by straps or a handle on one side, used for protection against blows or missiles.
   ▸Heraldry  a stylized representation of a shield used for displaying a coat of arms.
2. a sporting trophy consisting of an engraved metal plate mounted on a piece of wood.
3. a US police officer's badge.
4. Geology  a large rigid area of Precambrian rock, unaffected by later crustal processes.
5. a person or thing providing protection.
   ▸a protective plate, screen, or other structure.

v.

1. protect from a danger, risk, etc.
   ▸enclose or screen (machinery) to protect the user.
2. prevent from being seen.
3. prevent or reduce the escape of sound, light, or other radiation from.