的). When flying in the air, they will catch dust (灰尘), pollen (花粉) and other things. These things...柳絮为什么会让我们过敏？柳絮为什么会让我们过敏？The catkins (柳絮) themselves don’t make us allergic (过敏的). When flying ……

) it. How happy Obama was to see the marshmallow flying in the air! ……

. It's a _________ to watch falling leaves flying in the air.3. Would you tell me your ________________? ……

the basketball flying in the air.Playing basketball is not only exciting, but also makes me stronger ……

. When fully cooked, these air holes caused the vegetable to whistle.Flying penguinsIn 2008, the BBC said... for radio station 1ZB announced on the air that a mile-wide swarm of wasps (一大群黄蜂) was headed toward ……

of pigeons flying in the air. Each has a whistle tied to one of its feet, which makes a beautiful...? "A flock of pigeons flying in the air. Each has a whistle tied to one of its feet, which makes a beautiful ……

traffic jam (交通拥堵).Underwater highwaysUnderwater highwaysBesides “flying” in the air, we might also... around two hours.Besides “flying” in the air, we might also move around underwater. These highways ……

to cut traffic jam (交通拥堵).Underwater highwaysUnderwater highwaysBesides “flying” in the air, we might... around two hours.Besides “flying” in the air, we might also move around underwater. These highways ……

on the lake. You will see birds flying in the air or swimming in the lake, such as flamingos (火烈鸟). You would love to meet hippos (河马). Hippos like to spend most of the day in the water. They breathe air ……

on the lake. You will see birds flying in the air or swimming in the lake, such as flamingos (火烈鸟). You would love to meet hippos (河马). Hippos like to spend most of the day in the water. They breathe air ……

(精力充沛的). And I enjoy the feeling of sending the shuttlecock (羽毛球) flying into the air. Of course, I ……

looks like it’s flying in the air.Colorful eventsBrazilians are fun, easygoing and passionate (热情 ……

-making process goes: “One noodle in the boiling water, one flying in the air and one just being sliced ……

flying in the air. Men were shaking hands, it did not matter with whom, and bubbling over... feet were flying like mad, the claws scarring (刮撕) the hard-packed snow in parallel grooves (凹痕 ……

and then jumped. I had never felt like that before. It seemed like I was flying in the air like a bird. I... in the air sounded hard. But my coach encouraged me: “You never know until you try.” I thought ……