teph·ra 
(tĕfrə)
(tĕfrə)n.
Solid matter that is ejected into the air by an erupting volcano.
[Greek tephrā, ash; see dhegwh- in the Appendix of Indo-European roots.]
| 单词 | tephra |
| 释义 | teph·ra (tĕfrə)n. Solid matter that is ejected into the air by an erupting volcano. [Greek tephrā, ash; see dhegwh- in the Appendix of Indo-European roots.] |
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