n. 氦氧混合气(

98%氦和2%氧,供潜水



水中维持呼吸用)
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bumbler,
bumbling,
bumbo,
bumboat,
bumboatman,
bumelia,
bumetanide,
bumetrizole,
bumf,
bumfreezer,
相似单词
heliotropism,
Heliotropium,
heliotype,
heliotypography,
heliotypy,
heliox,
heliozincograph,
heliozincography,
Heliozoa,
heliozoan,