rock ptarmigans
plural of rock ptarmigan
simple past tense and past participle of surfel
A small path or trail that is not used regularly. / The path over which one has already traveled.
(aviation, slang) The lock pin used to help secure the Jesus nut of some helicopters.
岩場に暮らすライチョウたちは高山のツンドラに見事に溶け込むため、ハイカーは彼らが動くまで気づかないことが多い。
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