New cartridge-based products like Juul have been the main force behind the rise in vaping among teenagers.

Juul等新款烟弹型电子烟一直是电子烟在青少年群体中爆红的主力军。

This is also reflected in Peter's actions as he, unbeknownst to himself; lets his vengefulness and aggression become the main driving force for conflict in the remainder of the film.

这也反映了彼得自己的怒气和报复心，也就是电影后段混乱的主要来源。

If sustained, it could let Ukrainian forces threaten supply lines for Russia's main attack force and even put rear logistics targets inside Russia itself within striking range of Ukrainian artillery.

如果这种情况持续下去，乌克兰军队可能会威胁到俄罗斯主力进攻部队的补给线，甚至会使俄罗斯境内的后方后勤目标处于乌克兰炮兵的打击范围内。

As the Continentals marched up the Hudson River out of the city in September, Hamilton's company was part of the rear-guard which resisted Howe's men and sheltered Washington's main force as it retreated to the Harlem Heights.

9月，当大陆军队沿哈德逊河进军城外时，汉密尔顿的连队作为后卫的一部分， 抵抗豪的部队， 并在华盛顿的主力撤退到哈莱姆高地时为他们提供庇护。