你會寫程式嗎？聽聽各大工程師告訴你為什麼在 21世紀，寫程式是不可或缺的技能！

1
tic-tac-toe0:27
tic-tac-toe又可以稱為 noughts and crosses、Xs and Os，其實就是「圈圈叉叉」、「井字棋」的遊戲。在以前這個遊戲是紙筆遊戲，但在科技發達的21世紀，恐怕小朋友都在電腦或手機上玩這個了！

2
look it up1:06
look it up 在這裡是指「查閱（書、資料等）」的意思，而這個片語還可以做「仰望、好轉」的解釋。look還有好多種片語，我們一起來看看吧！

look up 查閱／好轉
E.g., Things are absolutely looking up, so don't be pessimistic.
事情絕對會好轉的，所以不要悲觀。

look forward to 期盼、期待（後面接名詞或動名詞V-ing）
E.g., In winter, we always look forward to the coming of spring.
冬天時，我們總是期盼春天的到來。

look after 照顧、照料
E.g., My mother asked me to look after my little sister when she was not at home.
當我媽媽不在家的時候，她要我照顧我的小妹。

*同場加映：

We all are living our lives within the Net World where we LIKE peoples' posts but don't give them expression of love in real beautiful world. Phones are becoming smarter and we are getting dumb. We, friends, family and relatives, sit together but talk and comment over the so called Social Media Platforms by ignoring the fact that nature has given us this real beautiful world with full of socialism.
Please people just put aside your smartphones and smart media and be a real Smart Person.

放下你的手機，抬頭看看這世界(中文字幕)

飛機上為什麼不能用手機中文字幕 Why Can't You Use Phones on Planes? Chinese Subtitle

基礎英文數學單字(Basic MATH vocabulary in English)

爆笑空姐

如果每個人都老老實實地搭飛機的話，到底會有多爆笑？

3
additions, subtractions

英文的「加減乘除」各是 addition、subtraction、multiplication、division，但是當你真正要在句子裡使用這四個運算時卻是用不同的字喔！

plus 加
E.g., 1 plus 3 equals 4.
一加三等於四。

minus 減
E.g., What is 7 minus 2?
七減二是多少？

times 乘
E.g., 3 times 4 is 12.
三乘四等於十二。

divided by 除
E.g., 6 divided by 2 equals 3.
六除二等於三。

4
turn upside down2:06
這裡的 turn upside down 的意思就是「顛覆、推翻」的意思。另外，這個片語還可以是「倒置」、「使某人失望」、「翻箱倒櫃」的意思，一起來看看例句就知道！

turn upside down 推翻、顛覆（多半指觀念或形象等抽象事物）
E.g., The law of demand is turned upside down.
需求法則完全被顛覆了。

turn something upside down 倒置
E.g., I turned the glass upside down, trying to make the last drop out.
我把玻璃杯倒置，試著把最後一滴倒出來。

turn somewhere upside down 翻箱倒櫃
E.g., Claire turned her room upside down to find her food.
克萊兒為了找她的食物而在她房間裡翻箱倒櫃。