例句： The road climbs steeply for several miles.

例句： They had led the country into economic disaster.

例句： A single magnetic disk.

例句： The plane did a few stunts before landing.

例句： She bundled her son off to school.

例句： We need some calcium everyday.

例句： The abdominal aorta is normally smaller than the thoracic aorta.

例句： I asked the teacher for her advice.

例句： Jill will find out your secret; she never misses a trick!

例句： This wallet feels to me like leather.