necessity is the mother of invention
(biology) movement of an organism along a magnetic and oxygen-concentration gradient
(botany) Any of the genus Calathea of plants belonging to the family Marantaceae.
plural of Schläfli symbol
A person who is in great need of something will find a way to obtain it.
嵐で一週間停電になったとき、地域の人々は、必要に迫られれば人は何とか手段を見つけるものだと思い出し、共同で発電機を作った。
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