WHO continues to recommend no closing of borders and no restrictions on international travel, including to Ukraine.

世卫组织继续建议不要关闭边界，不要限制国际旅行，包括不限制前往乌克兰。

youdao

No closing remark such as' Sincerely 'or' Best regards' is necessary.

结束时不必写“诚挚的祝福”或“谨致问候”之类的结束标识语。

youdao

No closing remark such as' Sincerely 'or' Best regards' is necessary.

结束时不必写“诚挚的祝福”或“谨致问候”之类的结束标识语。

youdao