Obama to appear on TV science show "Mythbusters"
President Barack Obama said Monday he is appearing on "Mythbusters," a television series that uses science to separate fact from fiction.
Obama’s appearance on the popular Discovery Channel show is part of a White House effort to highlight the importance of science, math and engineering as experts warn that low interest in these subjects among U.S. students could hurt the economy.
Questions tackled this year on "Mythbusters" include "What’s worse, having an empty beer bottle smashed over your head or a full one?" and "Can a sniffer dog be thrown off the scent using household items?"
The Obama episode, to air on December 8, reprises an earlier debunking of the 2,000-year-old story that Greek mathematician and engineer Archimedes set fire to an invading Roman fleet using a system of mirrors to focus the sun’s rays.
"I can announce today that I taped a special guest appearance for their show, although I didn’t get to blow anything up," Obama said at a White House science fair event. "I was a little frustrated with that."
separate something from something：慣用語，分開，劃分。
put someone off the scent：慣用語，擺脫某人的追蹤；使某人迷失尋找方向。例句：The clever maneuvers of the robbers put the Sheriff’s posse off the scent.（那幫搶匪的奸巧陰謀把警方耍得團團轉。）
1. Cast out, rid oneself of, as in He threw off all unpleasant memories and went to the reunion. [Early 1600s]
2. Give off, emit, as in The garbage was throwing off an awful smell. [First half of 1700s] Also see throw out, def. 1.
3. Also, throw or put off the scent. Distract, divert, or mislead, as in A mistaken estimate threw off her calculations, or These clues were designed to throw the detective off the scent. The variant comes from hunting, where the quarry may try to put pursuing hounds off the scent. Its figurative use dates from the mid-1800s. Also see off the track.
4. Perform in a quick, spontaneous, or casual manner, as in He threw off one sketch after another. [Mid-1700s]
set fire to someone or something：慣用語，放火燒某人或某物。例句：The old man accidentally set himself on fire.（那名老人不慎引火自焚。）