Quizzes for review
The sudden drop in bird sightings is a sign that the ecosystem is changing.
See correct answer
The sudden drop in bird sightings is a sign that the ecosystem is changing.
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Related words
sign
IPA(Pronunciation)
Noun
also
countable
sometimes
uncountable
used uncountably
Australia
Canada
US
Japanese Meaning
兆候（目に見える、または感じ取れる何らかの示し） / 動物が残した痕跡や証拠
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English - English
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