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The phrase a grain of sand describes something which is both insignificant yet somehow important.
1. He felt like just a grain of sand in the huge company, but his idea eventually led to a major innovation.他觉得自己在这家大公司里就像一粒沙子般渺小，但他的想法最终促成了一项重要的创新。2. Every act of kindness, no matter how small, is like a grain of sand that can help build a more compassionate world. 每一份善举，无论多微小，都像是一粒沙，能帮助构建一个更有同理心的世界。3. The missing document seemed like a grain of sand in the whole case, but it actually held the key evidence. 那份丢失的文件在整个案件中看似微不足道，但它却掌握着关键证据。
Word a day, speak their way!
10个月宝宝每天需要喝多少奶粉？
