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背单词
pelycosaur
pelycosaur
美
英
网络
盘龙目;盘龙类
词形变化
复数:
pelycosaurs
英汉解释
n.
1.
a
large
extinct
reptile
that
was
common
in
Europe
and
North
America
during
the
Permian
period
, 245
to
290
million
years
ago
.
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考试词汇表
mutagenic oligonucleotide
mute by visitation of god
mutton dressed up as lamb
mutual admiration society
mutual coherence function
mutual complementing code
mutual investment company
mutual neighborhood graph
mutual radiation grafting
mutual-aid working groups
mutual-complementing code
mutual-perpendicular axes
mutually beneficial basis
mutually disjoint subsets
mutually disjunct subsets
mutually exclusive access
mutually exclusive events
mutually exclusive option
mutually preferred method
mutually-exclusive option