薛济萍的回答：

你好！ 1. 冒极大的险 Work hard; your job is on the line. 好好工作, 不然你有失掉这份工作的危险。 2. 以某种方式 Could you write another program on the same lines? 你能否以同样的方式再编写一个程序? 1. Leaves on the line are an expensive problem for the railways. 处理铁轨上的落叶对铁路公司而言是一个耗资巨大的工程。 来自柯林斯例句 2. She's on the line from her home in Boston. 她是在波士顿家中打电话。 来自柯林斯例句 3. He wouldn't put his career on the line to help a friend. 他不会为了帮助朋友而让自己的事业受到威胁。 来自柯林斯例句 4. She put her washing on the line. 她把洗好的衣物晾在绳子上。 来自柯林斯例句 5. There was an echo on the line and I couldn't hear clearly. 电话里有回音，我听不清楚。

秋月春风的回答：

线的意思