亲爱的玉玉
No throwing objects from height 不得从高处投掷物体Throwing objects from height is forbidden 禁止从高处投掷物体Throwing objects from height is prohibited 禁止从高处投掷物体Throwing objects from height is strictly forbidden 严禁高空抛物Throwing objects from height is strictly prohibited 严禁高空抛物Danger: falling objects 危险：高空坠物Warning: falling objects 警告：高空坠物以上都可以，千万不要用什么 No High Attitude Parabolic, 切记！这是不要高海拔抛物线，老外根本不知所云。
交换礼物
英文是：Throwing objects in high sky is strictly prohibited.解释：throw 英[θrəʊ] 美[θroʊ] vi. 丢; 抛; 投掷; n. 丢; 投掷的距离; vt. 抛; 掷（色子）; 猛动（头、臂、腿）; 使处于，使限于; [例句]He spent hours throwing a tennis ball against a wall他好几个小时都对着一堵墙掷网球。strictly 英[ˈstrɪktli] 美[ˈstrɪktli] adv. 严格地; 完全地; [例句]He seemed fond of her in a strictly professional way他似乎只是出于职业缘故而喜欢她。prohibited 英[prə'hɪbɪtɪd] 美[prə'hɪbɪtɪd] v. 禁止，阻止( prohibit的过去式和过去分词 ); 不许; [例句]Unlawful search of, or intrusion into, a citizen's home is prohibited.禁止非法搜查或者非法侵入公民的住宅。
