to border on

If this sentence is true, then Germany borders China.

Thailand is bordered to the north by Myanmar and Laos.

Investigators base their conclusion on an analysis of a 60,000-year-old sediment core extracted from the bottom Lake Tanganyika in the East African Rift Valley, which borders Burundi, Democratic Republic of the Congo, Tanzania and Zambia. The lake is the world's second deepest fresh water lake.

China shares borders with Pakistan, India, Afghanistan, Tajikistan, Kyrgyzstan, Kazakhstan, North Korea, Laos, Vietnam, Nepal, Bhutan, Myanmar, Mongolia and Russia.

The USA and Canada share a border.