您要查找的是不是：
- high and low water alarm 水位报警器
- This paper analysed high and low water periods on the basis of summing up the former researcher findings and according to rainfall,long term runoff, sunspot and atmospheric circulation data. 在总结借鉴前人成果的基础上,依据黑龙江省的降水、径流长系列和太阳黑子、大气环流资料对黑龙江省丰枯水周期进行分析。
- Moreover, there is some difference between high and low water level periods.Generally speaking, the WQI is higher during high water level periods because of dilution. 而主流的高屏大桥与双园大桥测站由于水量较大，WQI平均值保持在50-60之间，显示水质属于中等的情形。
- I've searched high and low for my lost pen. 我到处寻找丢失的钢笔。
- Months of high and low sales average out over the year. 销售额高低不同的月份按全年统算达到一般水平。
- Here were the high and low, slaves and masters. 这里高低贵贱的人都有，有奴隶，也有主人。
- I've hunted high and low for the pen. 我已到处寻找过那枝笔。
- I don't know where I've left my car keys; I've searched high and low for them. 我不知道把我的车钥匙搁在何处，我已到处寻找过了。
- Law Analysis on High and Low Water Period in Heilongjiang Province 黑龙江省丰枯水周期规律分析
- He woos both high and low, both rich and poor. 他追起女人来，不论贵贱贫富。
- We all looked high and low for Mary's purse. 我们大家到处寻找玛丽的钱包。
- Her manners recommend her to high and low alike. 她的态度使上上下下的人都喜欢她。
- I've looked high and low for my wallet. 我上上下下地找我的钱包。
- I've been searching high and low for that file! 我一直在到处找那个文件夹。
- He woos both high and low,both rich and poor. 他追起女人来，不论贵贱贫富。
- Here were the high and low,slaves and masters. 这里高低贵贱的人都有，有奴隶，也有主人。
- Bill looked high and low for his lost shoe. 比尔到处找他丢了的那只鞋。
- I've searched high and low for my purse. 我到处找我的钱包。
- Bill looked high and low for his lost watch. 比尔到处寻找他那丢失的手表。
- They looked high and low for the lost child. 他们到处寻找那个丢失的小孩。
