annual
annual(每年的,书面正式,固定搭配多:annual report/income)
yearly
yearly(每年的,口语化,与 annual 近义但更日常:a yearly check-up = 每年的体检)
The charity's annual fundraising gala raised over a million pounds for children's education programmes.
该慈善机构的年度募款晚宴为儿童教育项目筹集了逾100万英镑。
She makes a yearly visit to her hometown to celebrate the Spring Festival with her extended family.
她每年都会回故乡,与家人共度春节。