ball machine
(mathematics) A two-dimensional invariant subspace in a given vector space
Alternative form of Alcmene
(typography) A character whose use is defined by private users and companies rather than defined by a standard such as Unicode, and which therefore has no universally accepted meaning.
(tennis) A machine that shoots tennis balls out of a pipe, allowing a player to practise hitting them.
彼女はバックハンドの練習のためにテニス用の球出し機を1時間使った。
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DiQt
Free
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