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to spill; to drop; to shed (tears)
to grumble (about); to complain (of)
to let (one's feelings) show
涙をこぼす場面が感動的だ。
The scene where tears were shed was moving.
コップの水をうっかりこぼしてしまった。
I accidentally spilled the water in the glass.
子どもがジュースをこぼさないように気をつけている。
I'm being careful so the child doesn't spill juice.