She thought his smug two-year-old grin of self-amusement and satisfaction would drive her to the brink, but she maintained her composure.

她认为她那两岁的儿子沾沾自喜、洋洋得意的咧嘴一笑，足以把她推向崩溃的边缘，但她仍然保持镇定。

youdao

In short, the Sun's large-scale magnetic field is taken to be self-sustaining, so that the solar-activity cycle it drives would be maintained with little overall change for perhaps billions of years.

简单来说，就是太阳的巨大磁场被用来进行自我维持，所以，由其驱动的太阳活动周期将会在几十亿年的时间里维持整体上维持极小的变动。

youdao

Those contestants who have not won the game but nonetheless maintained self-control and do the best they can under pressure are also winners in the competition with themselves.

那些没有在比赛中获得冠军、但仍然在竞技的压力之下发挥出自己最好水平的选手们，同样是与自身竞赛的最终胜者。

youdao

People who achieve self-actualisation, he maintained, are democratic in outlook, not authoritarian.

ECONOMIST: Guru

To the end, he maintained his extraordinary self-possession and focus.

ECONOMIST: Reminiscing in tempo

He also said there was no resolution so far of the basic contradiction between the two sides: the Azeris demand that its territorial integrity be maintained, and the Armenian demand that Armenians in Karabakh had a natural right to self-determination.

BBC: Karabakh: Are Things Moving?