Definition (承諾)
To fulfill a commitment or assurance given to someone.
信守諾言;履行諾言
She promised her children she would take them to the park if they behaved, and she kept her word.
她答應孩子們如果他們表現好就帶他們去公園,她信守了承諾。
The company promised excellent after-sales service, and they kept their promise.
公司承諾提供優質的售後服務,他們信守了承諾。
He promised to keep the secret, and he kept his word by never telling anyone.
他答應保守秘密,並且信守承諾從未告訴任何人。