渠道越往下挖，土质越硬，精钢泥震得手掌裂开，满手血泡，两天后血泡变成老茧，手变成松树皮。
B-Thing I-Thing O O O O O B-Thing I-Thing O O O B-Thing I-Thing I-Thing O O B-Thing I-Thing O O O O O B-Thing I-Thing O B-Time I-Time B-Thing I-Thing I-Thing O O B-Thing I-Thing O B-Thing O O B-Thing I-Thing I-Thing O