When adversaries meet, they become exceptionally alert and perceptive, instantly recognizing and being keenly aware of the other's presence and intentions.
在这次棋赛中，两位老对手再次相遇，真是仇人相见，分外眼明，每一步都走得小心翼翼，生怕露出破绽。
In this chess match, the two old rivals met again; it was truly a case of adversaries meeting with sharpened perception, each moving their pieces with utmost caution, fearing any vulnerability might be exposed.
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