矢先に， やさきに

1. just when (one is about to ...), just as, the very moment when, on the point of

就在……之际，恰在……之时，就在……的瞬间，即将……之际

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音读: シ  

训读:や  

日检:1 grade:2 笔画数:5 部首:111

音读: セン  

训读:さき  ま.ず  

日检:4 grade:1 笔画数:6 部首:10