You often ask people what different sentences are. Some are very simple. Why don't you have a go at working out the meanings yourself and then asking if you got it right?! You will not learn if you don't start trying to work these things out yourself!

Google ！ 哈哈

有 多 冷？ -- is it very cold? 我 头 疼， 咳嗽，可能 感冒了。-- my head aches, i cough, probably got cold 一点 我 去 医院 看病。i'll go to the hospital (to check the illness), 一点 is odd here, maybe it was 一天 = one day 每个人 都 要 注意 交通 安全。-- everyone must pay attention to traffic safety 小孩子 不要 在 马路 上 玩。-- kids should be playing on the road 欢迎 你 秋天 来 北京。-- welcome you to come to Beijing in autumn 那 时候 天气 最好， 不 冷 也 不 热。-- the weather is the best at that time, not cold and not hot 北京的 春天 常常 刮风，补偿下雨 -- Beijing's spring is often windy, it doesn't rain often. (补偿 is odd here, probably it's 不常）