回复: 登陆前后（慢慢更新中）~
见闻（2）
来到加国一个月了，即使正处夏天，也还是感觉干干的，就算刚下完雨，路面和草地也都会迅速的恢复下雨前的状态，那真是一个水珠都找不到了~
早上起床喉咙和鼻子也会感觉有点痒痒的~
于是，私自决定去超市买台空气加湿器~
没想到到了超市，加湿器的品种还挺多，光名字就把我搞晕了什么humidifier，还有vaporizer~而这两个词在我理解都差不多，可价格确截然不同~手头没有字典可查，又不好意思询问，当然也不知道问谁，嘻嘻，空手而归，没敢做主~
回来赶紧查询了一下，或许国内的同学也用的上~
Cool-mist humidifiers and steam vaporizers are equally effective in humidifying the air and supplying the symptomatic relief humidified air can give to the child who has significant nasal
congestion. However, there are certain drawbacks to each of these methods which need to be considered before investing in any particular humidifier.
Cool-Mist Humidifier
These machines work by making water vapor through a rapidly turning disk within the water of the humidifier. Because the vapor from the machine is not heated, there is no risk of burning the child should the water spill or she places her face close to where the vapor escapes. The biggest drawback to cool-mist humidifiers is that the cool water can be an excellent breeding ground for mold and bacteria. Therefore, it is very important (and somewhat bothersome) to follow the manufacturer's instructions concerning cleaning which usually includes cleansing the tank on a daily basis with soap and water. In addition, these machines are quite efficient at dispersing the minerals within tap water which can cause health problems themselves. So, distilled water should be used in cool-mist humidifiers.
Steam Vaporizer
These devices are less likely to have a lot of mold and bacterial growth, but the risk of burn can be significant. Vapor is made in these machines by using a heating element to cause steam. This method does not cause minerals to be dispersed in the air. So, tap water can often be used with these devices making them much less expensive to operate. However, because of the very high temperature of the water, these should not be used for younger children.
Ultrasonic Humidifiers
These machines cause vapor by creating ultrasonic vibrations within the water. These were originally thought to be better because it was felt the risk of dispersing bacteria, molds, and minerals was minimal. However, this has not always been found to be the case. The safety of these devices is certainly better than the steam vaporizers, and they do tend to disperse much less bacteria and mold than the cool-mist humidifiers. However, they are quite efficient at sending minerals into the air, so distilled water must be used with these as well.
体会：在国内买个文曲星带过来还是很必要的，可以随时查生活中的各种单词，不仅可以提高词汇量，还可以避免一些尴尬^_^
