Depending only on formal thinking, Euclid formed system through figure proof, firstly applied the fifth postulate in the 29th proposition.

欧几里德仅仅依靠形式思维，通过图形佐证形成体系，在第29个命题中首先运用第五公设。

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But I want you to tell me in terms of thinking about formal charge, which Lewis structure would you predict to be the most stable?

但我想让大家告诉我,从形式电荷的角度考虑，你会预测哪一个路易斯结构是最稳定的？

麻省理工公开课 - 化学原理课程节选

Put it another way: he may have no burning desire to change the Bank's formal target, but you can't help thinking Governor Carney will raise the bar for the economy more generally.

BBC: Governor Carney: Same remit, new ambition