だいせんぱい
覆水盆に返らず: “spilt water does not return to the basin” → some things cannot be undone
consecutive jobs
大先輩: veteran, someone who is one's senior by a significant degree
一粒: a grain (of rice); a drop (of rain)
He is my veteran, and he taught me many things.
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DiQt（ディクト）
無料
★★★★★★★★★★
