John stiffened his jaw so he wouldn't disgrace himself by crying.

紧牙关，以免己哭出来丢。

He tried to stiffen his wavering soldiers.

他企图使动摇的士兵坚强起来。

He stiffened at her rude remarks.

他为她的无礼言词而板起面孔。

Threats merely stiffened his spine.

威胁只能使他更加坚毅。

This paper presents an approximate analytic method for the stiffened torispherical shell with opening under uniform external pressure, that is, the equivalent spherical shell method.

本文提出一种外压作用下开孔加筋碟形薄壳屈曲的近似分析方法──等价球壳方法。