boundaries是什么意思？

Learn: Expand your boundaries.

All the surveys found that people mixed up names within relationship groups such as grandchildren, friends and siblings but hardly ever crossed these boundaries.

Once you have worthy opponents, set some ground rules so everyone understands responsibilities and boundaries.

Students risk health and well being,as well as performance in other end-of-term work, when faculty offers take-home exams without clear, time-limited boundaries.

Esperanto is used internationally across language boundaries by at least 1 million people, particularly in specialized fields.

As conservation areas become smaller, lions are increasingly coming into contact with human populations, which are expanding to the boundaries of these protected areas.

Eat Grub is Britain's first new food company that breaks western food boundaries by introducing edible insects as a new source of food.

Megathrusts are created in earthquake zones-land plate boundaries where two plates converge.