Level 320
Level 321

pter


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pter
pter。 (GK ptera)=wing 翼
helicopter
[helic-;-o-;pter n.]。 n.直升飞机 v.用直升飞机载送
apterous
[a-;pter;-ous a.]。 a.无翅的
hemipterous
[hemi-;pter;-ous a.]。 a.半翅目的
homopterous
[homo-;pter;-ous a.]。 a.(昆虫)同翅类的
Level 322