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至急， しきゅう
1. urgent, pressing, immediate, prompt, express
2. urgently, promptly, at once, right away, without delay, as soon as possible
紧急的，迫切的，即时的，迅速的，特快；紧急地，迅速地，立刻，马上，毫不拖延，尽快
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至る， 到る， いたる
1. to arrive at (e.g. a decision), to reach (a stage), to attain
2. to lead to (a place), to get to
3. in the extreme case of
4. to come, to arrive, to result in
得出(例如结论)，达到(阶段)，实现；通往(某地)，到达；在极端情况下；到来，抵达，导致