文档介绍：地质类
active /ˈæktɪv/ adj
【VOLCANO】an active volcano is likely to explode at any time
The volcano became active last [C] a valuable bright green stone that is often used in jewellery
[U] a bright green color
>emerald adj
erupt /ɪˈrʌpt/ v [I]
if fighting, violence, noise etc erupts, it starts suddenly = break out
Violence erupted after police shot a student during the demonstration.
A political row erupted over the MP's comments.
if a volcano erupts, it explodes and sends smoke, fire, and rock into the sky
if a place or situation erupts, there is a sudden increase in activity or emotion
erupt into
They were angry to the point of erupting into riot.
Their conversations often erupted into minor squabbles.
erupt into laughter/shouting etc to suddenly start laughing, shouting etc
He erupted into loud, desperate sobs.
if spots erupt on your body, they suddenly appear on your skin
>eruption /ɪˈrʌpʃən/ n [U and C]
a volcanic eruption
the eruption of violence
gem /dʒem/ n [C]
also gem stone a beautiful stone that has been cut into a special shape = jewel
precious gems
something that is very special or beautiful
Every single ad in the campaign has been a gem.
The Fortune is a tiny gem of a theatre.
gem of
little gems of advice
a very helpful or special person
Ben, you're a real gem!
jewel /ˈdʒuːəl/ n [C]
a valuable stone, such as a diamond = gem
jewels [plural] jewellery or other objects made with valuable stones and used for decoration
She loved dressing up and wearing priceless jewels.
a very small stone used in the machinery of a watch
something or someone that is very valuable, attractive, or important
He introduced her to Budapest, a jewel of a city.
the jewel in the crown the best or most valuable part of something
Puddings are the jewel in the crown of British cookery.
→ crown jewel
crown jewel n [C]
the crown jewels the crown, sword, jewels etc worn by a king or queen for official ceremonies
the best or