A simulation is the activity of making conditions like the real ones, especially to test something, or the set of conditions you get when you do that. A flight simulation, a computer simulation of the weather, a classroom simulation of a job interview.

A simulation simulation is是 the activity of making conditions like the real ones製造出像真實情況一樣的活動 especially to test something尤其是為了測試某樣東西 or或是 the set of conditions you get做出這件事之後 when you do that你得到的那組情況 a flight simulation飛行模擬 a computer simulation of the weather天氣的電腦模擬 a classroom simulation of a job interview課堂上的求職面試模擬

Scientists, soldiers, doctors, and game-makers run simulations because the real thing would be too costly, too slow, or too dangerous.

Scientists, soldiers, doctors, and game-makers科學家、軍人、醫生、遊戲製作者 run simulations會做模擬 because因為 the real thing真實的情況 would be太 too costly, too slow, or too dangerous花錢、太慢或太危險

Though actually, the word is older than computers. English had it in the 1300s for pretending, even for putting on a false show, and that older sense — simulation as a kind of act — still sits in formal writing.

Though actually不過實際上 the word這個詞 is older than computers比電腦還要老 English had it英文早就有這個詞 in the 1300s在1300年代 for pretending用來表示假裝 even for putting on a false show甚至是做假的表演 and而 that older sense那個較舊的意思 simulation as a kind of act把simulation當成一種行為 still sits in formal writing仍然存在於正式書寫中

Today the testing-and-training sense is the one students meet first. It is a noun, more at home in school, work, and news than in very casual chat, where people may just say “we practised” or “it’s a game.”

Today今天 the testing-and-training sense測試和訓練的意思 is the one students meet first是學生最先接觸到的 it is它是 a noun名詞 more at home in school, work, and news比較常出現在學校、工作、新聞裡 than in very casual chat而不是很隨意的聊天中 where people在那種場合人們 may just say可能只會說 'we practised'「we practised」 or或 'it's a game'「it's a game」