The line is the world's first trunk line for secure quantum telecommunications.

这条线是世界上第一条保证量子通讯的中继线。

We expanded production of medical supplies by a large margin within a short time, ensured supply and price stability of daily necessities, and maintained smooth transportation on trunk lines, as well as stable supplies of coal, electricity, oil, and gas.

迅速扩大医用物资生产，短时间内大幅增长，抓好生活必需品保供稳价，保障交通干线畅通和煤电油气供应。

Yet, almost in a twinkling, the whole situation changed; towns sprang up overnight, roads were built, over which teamsters could carry the oil to the nearest shipping points, and the great trunk lines began to extend branches into the regions.

然而，几乎在一瞬间，整个情况就发生了变化；一夜之间，城镇如雨后春笋般涌现，道路建成，卡车司机可以通过这些道路将石油运送到最近的航运点，而伟大的干线开始向这些地区延伸分支。