Aaagh! Mosquitoes are everywhere! They are a big problem in many countries. They carry sicknesses. They like to bite people. Millions of people get sick from mosquito bites every year. 到處都是蚊子！蚊子會叮人，散布病菌。每年都有好幾百萬人因為蚊子叮咬而生病。 Click HERE for the full transcript!
