- frontier
- 01. The border between the United States and Canada is the world's longest [frontier].02. Many governments has increased security on their [frontiers] in an effort to curb terrorist activities.03. The [frontier] has been closed due to rebel activity in the region.04. South Korean President Kim Dae-jung won the Nobel Peace Prize on October 13, 2000, for his efforts toward reconciliation with North Korea, an initiative that has prompted hopes for peace on the Cold War's last [frontier].05. Space is the final [frontier] for man to explore.06. Scientists working on cloning techniques are on the [frontier] of a new era for the human race.07. Our car was searched by customs officials when we got to the [frontier].08. A private airline company hopes to expand the [frontiers] of commercial travel by offering tourist flights into space within the next decade.09. Your ancestors came to this country two hundred years ago to help open up the new [frontier] in America.10. Recent developments in medical technology are redefining the [frontiers] of human longevity.11. Brazil shares a [frontier] with all South American countries, except Ecuador and Chile.12. The [frontier] between the two countries was temporarily closed.13. Swaziland is surrounded by South Africa, except for a short [frontier] with Mozambique.14. A Japanese proverb notes that there are no national [frontiers] to learning.15. John F. Kennedy once said, "We stand today on the edge of a new [frontier]-the [frontier] of the 1960s, a [frontier] of unknown opportunities and perils, a [frontier] of unfulfilled hopes and threats.... The new [frontier] of which I speak is not a set of promises - it is a set of challenges."16. Yevgeny Yevtushenko once stated that poetry is like a bird; it ignores all [frontiers].
Grammatical examples in English. 2013.