任何球类运动他都玩不好。He was useless at any game with a ball.这是有史以来发明出的最受欢迎的球类运动。This is the most popular ball game ever devised.最受欢迎的球类运动有棒球 、 足球和篮球.The most popular sports are baseball, football and basketball....
There is a lot of concern over the amount of herbicides and pesticides used in farming.人们对农业上灭草剂和杀虫剂的用量非常担忧.Resistance of weeds to certain herbicides is beginning toshow up.杂草对某些除草剂的抗药性已显现出来.Arsenic is widely associated ...