What does "anno Domini," as in A.D. 2000, mean in English?

"As I walk through this world, nothing can stop..." which 1962 No. 1 hit by Gene Chandler? Which actor won the Best Actor Oscar for the 1999 film "American Beauty"? As in 2004, which event at the 1896 Athens Olympics finished at the Panathenaic Stadium, won by national hero Spyridon… Which Maryland city on the Chesapeake Bay is known in Navy slang as "Crabtown"? As it crosses Oklahoma, U.S. Highway 81 follows or parallels which famous 1800s cattle trail? As it has no mass, which particle travels at about 186,000 miles per second? Complete the saying: "Truth is stranger than ___." Which Pennsylvania governor from 1995 to 2001 became the first U.S. secretary of homeland security?