1·The extra payments are a lifeline for most single mothers.
额外补助对大多数单身母亲来说都是赖以生存的生命线。
—— 《牛津词典》
2·You can reorder a single lifeline from one location to another.
您可以从一个位置到另一个位置重新排序单个生命线。
3·The messages are added to the bottom of the lifeline.
这些消息被添加到此生命线的底部。
4·These domestic tourists are now the lifeline of tourism businesses and their expenditures come as much needed revenue to airlines, hotels and others in the industry.
这类国内旅客现在成为了旅游公司的生命线，旅客的消费成为航空公司、酒店及行业其它企业必需的收益。
5·If a create message is reordered, the starting point of the created lifeline will be moved to match the new location of the created message.
如果一个创建的消息得到重新排序，那么创建生命线的起始点将会移动以匹配创建消息的新位置。