Emergency evacuation drills shall be conducted at least annually.

每年至少在宿舍举行一次应急疏散演练。

youdao

UV light traps are functioning properly and cleaned regularly, and bulbs are replaced at least annually, even if light is still visible.

紫外灯捕集器是正常发挥功用，定期作清洁，即使仍可看到灯光，光管亦至少每年更换一次。

youdao

The representatives of Contracting Parties shall constitute the Executive Committee of this Agreement and shall meet at least annually in that capacity.

由本协定书各缔约方的代表组成本协定书的执行委员会，该委员会至少每年召开一次会议。

youdao

The U.S.Centers for Disease Control reports that obesity costs at least $147 billion annually, and that figure is based on data from 2006.

VOA: standard.2010.07.02

Sexually active gay and bisexual men should be tested at least annually for HIV, syphilis, chlamydia and gonorrhea.

CNN: How sexually active young people can stay safe

At least annually, assess your much coveted brand worth and determine how technology and other external forces are impacting it.

FORBES: CEO As CBO: Chief Branding Officer - 7 Ways a CEO Can Boost a Company's Marketing Value

And you should check the databases at least annually since states are constantly acquiring new unclaimed assets, Ms. Ganeriwala says.

WSJ: Search for Unclaimed Money