English for All

not (unusual, unhappy)

below; below the surface of; less than; as called for by a law, agreement or system ("The river flows under the bridge." "Such action is not permitted under the law.")

to know what is meant; to have knowledge of

to join together

all of space, including planets and stars

a place of education that usually includes several colleges and research organizations

except if it happens; on condition that ("I will not go, unless the rain stops.")

up to a time; before

to, in or at a higher position or value

to advise strongly; to make a great effort to get someone to do something