每加仑45美分的补贴仍然在存在。

The subsidy of 45 cents per gallon remains.

youdao

在存在的几百种神经递质中，已知的有几十种。

Dozens of neurotransmitters are known; hundreds may exist.

youdao

在存在不确定性的情况下或者有多个选择时尤其如此。

This is especially true in situations of uncertainty or when several choices are available.

youdao

So in this context, the river of oblivion serves an obvious purpose in the context we have here in Book Two.

故在这部分文本中，遗忘之河便是为了遗忘而存在的,在第二册书正是这样体现的。

耶鲁公开课 - 弥尔顿课程节选

Science is very hostile to innovation when it challenges existing theory, sort of like management, the same thing.

科学对创新是有敌意的,当创新在挑战已存在的理论，跟管理一样，同样的道理。

麻省理工公开课 - 固态化学导论课程节选

So iron left to own devices in the atmosphere in the presence of a little bit of water, with the water form iron oxide.

铁在大气中，在存在,少量水的条件下，大气会开始与水结合产生氧化铁。

麻省理工公开课 - 热力学与动力学课程节选