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to phrases
before present
earth.sc.
放射性年龄值
现在以前的
指1950年以前
geol.
距今
English thesaurus
Before Present
abbr., water.suppl.
B.P.
(Time)
unit.meas., abbr.
BP
before present
:
5 phrases
in 2 subjects
Earth sciences
3
Geology
2
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