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 4000 Duolingo (N O) - Spelling Practices
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n. notch [___] an elementary particle with 0 charges and mass about equal to a proton


Spelling Word: neutron
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n. niken a coin worth one-twentieth of a dollar


Spelling Word: nickel
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v. bắt buộc force; bind by an obligation; cause to be indebted; do a service or favor for


Spelling Word: oblige
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a. hiển nhiên exposed; easily discovered; plain


Spelling Word: obvious
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a. ngoài khơi at some distance from the shore


Spelling Word: offshore
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a. khứu giác relating to, or contributing to a sense of smell


Spelling Word: olfactory
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a. đục impenetrable by light; not transparent; not reflecting light; having no luster


Spelling Word: opaque
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a. trật tự conformed to order; in order; regular; well-regulated


Spelling Word: orderly
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n. quặng a mineral that contains metal that is valuable enough to be mined


Spelling Word: ore
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a. đông of or relating to the countries of the orient or their peoples or cultures; eastern


Spelling Word: oriental