热点和它们的火山痕迹是标志板块移动的里程碑。
The hot spots and their volcanic trails are milestones that mark the passage of the plates.
教练称：这是一个里程碑：是转变的标志。
The tutors say this is a milestone: a sign of “transformation”.
目前进行的试验是标志混合电力驱动系统技术成熟度的重要里程碑。
The test held today marks a significant milestone in technological maturity of the hybrid electric drive system.
应用推荐