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to phrases
岩燕 yányàn
gen. martin; martlet
biol. martin (Chelidon urbica)
desert. Ptyonoprogne fuligula (非洲沙漠、阿拉伯半岛); rock martin (非洲沙漠、阿拉伯半岛)
岩燕: 2 phrases in 1 subject
Desert science2