leatherleaf fern
A mask used in medical emergencies to deliver oxygen from a reservoir to the patient.
Polypodium scouleri, native to western North America / Pyrrosia eleagnifolia, native to New Zealand / Rumohra adiantiformis, widespread
(organic chemistry) Any univalent radical derived from an alkyl radical by replacing one or more hydrogen atoms by aryl groups
present participle of outsmell
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DiQt（ディクト）
無料
★★★★★★★★★★
