three small doors
三扇小门
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Don's margins have grown so small that on three occasions he has had to put his savings into the Apothecary Shoppe in order to keep the doors open.
唐的利润实在太微薄了，为了继续经营下去他不得不三次用自己的积蓄贴补“药剂师专柜”。
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