信守

xìn shǒu bù yú

信守不渝

live up to one's pledge

xìn shǒu hé tong

信守合同

abide by a contract

xìn shǒu hé píng gòng chǔ wǔ xiàng yuán zé

信守和平共处五项原则

faithfully abide by the Five Principles of Peaceful Coexistence

nǐ méi yǒu xìn shǒu wǒ men de xié dìng

你没有信守我们的协定。

You have not kept to our agreement.

jiǎn yī xiàng dōu xìn shǒu nuò yán

简一向都信守诺言。

Jane always keeps her promises.