億 - hundred million, 10**8

several hundred million years

hundred million; 100,000,000; 10^8

10,000,000,000; ten billion

1,000,000,000; billion

100,000,000; one hundred million

to show unwillingness (to do); to be reluctant (to do); to look annoyed; to show signs of finding something bothersome

national unity (esp. during wartime)

millions; vast fortune

troublesome; bothersome; tiresome; annoying

the people; multitude; masses

millions and millions

billionaire; multimillionaire; very rich person