In the mass production era, multinational firms tended to centralize their operations.

在大规模生产时期，跨国公司倾向于集中运营。

《柯林斯英汉双解大词典》

Tourism in the mass form as we know it today is a distinctly twentieth-century phenomenon.

就我们所知，广义的旅游业显然是一个二十世纪的现象。

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Pouring concrete mixture into the sea immediately started the hardening process and rather than just dissolving in the mass of water, the substance was tough and long-lasting.

将混凝土混合物倒入大海后立即开始硬化过程，而且该物质非但不会在水中溶解，还保持坚硬耐久。

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During this period,many experts warned of mass starvation in the developing world where populations were expanding faster than crop production.

VOA: special.2009.11.10

And in terms of equations that we use, it's sometimes easier to plug in the fact, since momentum is equal to mass times velocity.

在我们使用方程这方面，事实上有时是很容易代入的，因为动量等于质量乘以速度。

麻省理工公开课 - 化学原理课程节选

Just this watery mass again. So it's creation undoing itself in some of the descriptions, as opposed to just heavy rain.

又变成了一个大水球,这里是自我毁灭，而不是毁于倾盆大雨。

耶鲁公开课 - 旧约导论课程节选

Simply nowhere in the mass media have I seen it reported how strong third-quarter earnings were.

FORBES: Media Mayhem

It is not clear what role, if any, he had in the mass murder of inmates.

BBC: Former Auschwitz Nazi guard Hans Lipschis found in Germany

Twenty six people were killed by Adam Lanza in the mass shooting last week.

BBC: Paul Simon plays at teacher's funeral