headlights (头灯)enginebumpertiresdoor. ……

“穿脱自如”的轮胎People in cities sometimes ride bikes. But they can’t ride in mountain areas (山区). This new kind of tire can solve this problem. Look, it has a zipper (拉锁). You can change the tires ……

, you might need to change your bike’s tires (轮胎) or even use a different bike. This is quite.... When you want to ride in the mountains, you can just put reTyre over your original tires ……

, you might need to change your bike’s tires (轮胎) or even use a different bike. This is quite.... When you want to ride in the mountains, you can just put reTyre over your original tires ……

your plane lands, listen to the sound of the tires hitting the ground. The reason the tires don’t explode is because they are made of natural rubber. The tires of cars, motorbikes and trucks are also ……

轮胎为什么是黑色的？Take a look at the cars in the street. What color are their tires (轮胎)? They are all black. Do you know why? Early car tires had a different color. That’s because they were made of natural ……

汽车轮胎为什么是黑色的？Take a look at the cars driving down the street. What color are their tires? They are all black. Do you know why? Early car tires had a much lighter color. That’s because they were made ……

Dec 10, 1845: British civil engineer Robert Thompson patented the first pneumatic (充气的) tires. ……

Have a heart that never hardens, and a temper that never tires, and a touch that never hurts.— Charles Dickens(English writer, 1812-1870) ……

炫酷发明It is not very safe to ride a bike at night. How about trying this bike? Its tires (轮胎) give out light (发光). Oh, a car is coming. Don’t worry. The driver can see you! ……

class are veryannoying(讨厌的)! They eat snacks, talk and even play games in class. They also change... the air out of their tires.EditorEditor ……

. He likes to help others. Guido is a blue forklift (叉车). He helps McQueen change tires (换轮胎). Finn ……

Has it ever occurred to you that tires (轮胎) could be made of food waste? Well, it seems... that tomato peelings (皮) and eggshells (鸡蛋壳) can be used as a filler (填料) for rubber tires. Their tests ……

to both head lights,slashed a hole in all four tires...And maybe next time he'll think before he...'t be on me!Maybe next time he'll think before he cheats...— Read by Rickon CRI Easy FM (91.5 FM in Beijing ……

the chain drive that bikes still use today. Later in that decade (十年), brakes and tires were finally... and it used the chain drive that bikes still use today. Later in that decade (十年), brakes and tires were ……