留学生必须打疫苗才能来加拿大？2022秋季入境政策+材料清单 time：2022.08.05
https://travel.gc.ca/travel-covid/travel-restrictions/wizard-start
https://www.canada.ca/en/immigration-refugees-citizenship/services/study-canada/study-permit/prepare/designated-learning-institutions-list.html
查询
https://www.cic.gc.ca/english/contacts/web-form.asp
https://www.canada.ca/en/immigration-refugees-citizenship.html
https://www.cbsa-asfc.gc.ca/menu-eng.html
https://health.canada.ca/en/public-health/corporate/contact-us.html
https://www.canada.ca/en/public-health.html
