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Efficiency in grain production isn't an option—it's a necessity.
The labor which it would require to make a single one of these guns by hand would exhaust the patience and perseverance of any ordinary workman.
I don't write for the reader, I write against the reader.
【解释】幸福不可强求,保持愉快的心情,更能感受到幸福;灾祸难以避免,消除怨恨他人的念头,就能远离灾祸。