例句與造句

1. Pearceite is a brittle mineral that breaks with a Cleavage is either absent or poor.
2. In the supergene sulfide enriched zone, ore minerals include pearceite, proustite, tetrahedrite, polybasite, and pyrargyrite.
3. Associated minerals include acanthite, mckinstryite, galena, sphalerite, pyrite, chalcopyrite, stromeyerite, polybasite, pearceite, tetrahedrite tennantite and native silver.
4. It's difficult to find pearceite in a sentence. 用pearceite造句挺難的