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🧩 词语组成解析
🗣️ 情景例句
Yes. About four years ago.
是的 ，大约四年前走的。
If you cannot bite, never show your teeth.
不能打仗，切莫出兵。
With the invention of writing, a great advance was made, for knowledge could then be not only communicated but also stored.
随着书写的发明，又迈进了一大步，因为这样一来，知识不仅能交流，而且能储存了。