学会成立三十周年之际,海外分会纷纷发来贺信。Xuéhuì chénglì sānshí zhōunián zhī jì, hǎiwài fēnhuì fēnfēn fā lái hèxìn.On the thirtieth anniversary of the society's founding, overseas branches sent congratulatory letters one after another.
校长给毕业的学生们写了一封贺信。Xiàozhǎng gěi bìyè de xuéshengmen xiě le yì fēng hèxìn.The principal wrote a letter of congratulations to the graduating students.
我收到了朋友寄来的贺信,里面还夹着一张照片。Wǒ shōudào le péngyou jì lái de hèxìn, lǐmiàn hái jiā zhe yì zhāng zhàopiàn.I received a congratulatory letter from my friend with a photo tucked inside.