have a tiger by the tail
plural of RPer
(geometry) A way of transporting geometrical data along smooth curves in a manifold.
It is only known to God; it is unknown to people. / (often modifying a parenthetic concession) It is known unto God; it is certainly true.
(idiomatic) To be in a difficult or dangerous situation in which one ideally should not remain, but from which one cannot withdraw.
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DiQt（ディクト）
無料
★★★★★★★★★★
