Here's an experiment to see how much air your lungs can hold:You'll need Large pan 2-liter (升... the straw and put its short end in the mouth of the bottleHold your finger over the mouth of the bottle ……

Here's an experiment to see how much air your lungs can hold:You'll need Large pan 2-liter (升... the straw and put its short end in the mouth of the bottleHold your finger over the mouth of the bottle ……

Make one's mouth waterMary: What's your favourite dish?Dave: Chicken soup. Every time I think about it, it makes my mouth water.Way to useMake one's mouth water顾名思义就是"让某人的嘴巴流口水"。主要是一种口语化的说法，用来 ……

最大的步行机器人。HERE comes a fire-breathing dragon! The big monster’s name is Tradino. It’s the world’s largest walking robot. It can walk around, wave its wings and breathe fire from its mouth. The 11-ton ……

the tongue to move freely inside the mouth.It also cleans your mouth and keeps your mouth free from germs.Saliva’s enzymes (酶) also help to fight off infections (感染) in your mouth. ……

. It makes bubbles in your mouth, just like toothpaste. Don’t forget to rinse (冲洗) your mouth with water. Kids under 6 cannot use it. The bubbles might make them feel uncomfortable. ……

! But there is a problem. When you eat pineapple, your mouth starts to burn (刺痛). What&rsquo..., the bromelain breaks down the proteins in your mouth. It makes your mouth burn.You can put pineapple ……

? Pineapples are sweet and juicy (多汁的), but there is a problem. When you eat pineapple, your mouth starts... (蛋白质). So when you eat pineapples, bromelain breaks down the protein in your mouth. It makes your ……

Donkey,Donkey,Old and gray,Open your mouthAnd gently bray. ……

Donkey,Donkey,Old and gray,Open your mouthAnd gentlybray(驴叫声). ……

There are about a billion (十亿) bacteria (细菌) in your mouth right now.There are about a billion (十亿) bacteria (细菌) in your mouth right now.   ……

. The winds alsotearfarmers' housesdown.What can you do to stop sandstorms? Here's an idea: Ask your... of yourself if sandstorms come your way this month. Here are some ideas:.If you know a storm is coming, stay ……

? The HidrateSpark PRO, a smart water bottle, is here to help. It connects to apps on your phone to measure (估量... much is the right amount? The HidrateSpark PRO, a smart water bottle, is here to help. It connects ……

a pen in your mouthDo you often hold a pen in your mouth? When you do this, do you feel happier... experiment as before, he couldn’t get the same results. He now thinks that holding a pen in your mouth won ……

and the bottom part is in your mouth.At first, you might find it strange to breathe (呼吸) through...;part is in your mouth.At first, you might find it strange to breathe (呼吸) through a snorkel. You ……