Yes, 'n' how many ears must one man have.

一个人要有多少只耳朵。

youdao

Yes, 'n' how many times must the cannon balls fly.

炮弹要在天空飞翔多少次。

youdao

Yes, 'n' how many seas must a white dove sail.

一只白鸽要飞过多少海。

youdao

An R.N.must have at least a two-year nursing degree.

VOA: special.2009.08.13

PROFESSOR: Good. So, it's going to be in 3, because that's the shortest energy difference we can have, 3 those 2 are inversely related, so it must be n equals 3.

教授：好，是3，因为它的能量差最小，红色的是我们能看到的，所以一定是n等于。

麻省理工公开课 - 化学原理课程节选

The ionization energy must then be nothing more than, that is the energy to go from the ground state here to n equals infinity, so that would be the energy at state infinity minus the energy of the ground state.

这个电离能一定不会大于，从基态到n为无限大时的能量,而是等于,无限远处的能量减去基态能量。

麻省理工公开课 - 固态化学导论课程节选

Playoff teams must pay the N.

FORBES: Tampa Bay Lightning To Post Huge Loss This Year Despite Stanley Cup Run

That is why we must strengthen U.N. and regional peacekeeping, and not leave the task to a few countries.

CNN: Obama: 'Peace requires responsibility'

At the same time, the U.N. must work hard at selling its peace plan to neighboring nations, so they will rein in their proxies in Afghanistan.

CNN: A Workable Plan