目前主要采用离子交换水处理法。
当然可以。请给我您的兑换水单。
局部换水，并测试亚硝酸含量。
请出示相关的兑换水单好吗？
老师：博比，你今天给金鱼换水了吗？
Teacher: Bobby, have you given the goldfish fresh water today?
请您填一下这份兑换水单并签名好吗？
Will you please fill in the exchange memo and sign your name to it?
如果你经常换水，是可以维持好几天的。
If you change the water regularly, they'll last for several days.
这是现金和外汇兑换水单。
职员：好，我现在就为您填写这张兑换水单。
请保存好您的兑换水单。
请填一下兑换水单好吗？
我常常去喂它们，给它们换水。我们是好朋友。
I often feed them and change water for them. We are good friends.
请您填写兑换水单。
重复第1步，并搅拌以洗去蜡涂层，最后换水煮面条。
Repeat Step 1 and try to stir the noodles again to wash away the wax coating on the noodles before cooking it in a.
解决的办法是要常替换水管，即使看上去水管是好的。
The solution is to replace hoses, even ones that look good, more frequently.
人口趋向生育等值替换水平是历史最有戏剧性的社会变化。
The move to replacement-level fertility is one of the most dramatic social changes in history.
局部换水。添加亚甲基蓝，每加仑水添加2 -5滴。
Do partial water changes. Add 2-5 drops per gallon of Methylene Blue.
这是外汇兑换水单，请填上您的姓名，需要兑换的金额。
This is an exchange memo. Please fill in your name and the amount you intend to change.
每周：清洁窗户和冰箱，给鱼缸换水，用换下来的水浇花。
Every week: Clean the Windows and refrigerator. Change the water of the fishbowl. Give the fish water to the plants.
那么，如果我可以提一个建议的话，请您保管好这张兑换水单。
So, if I may make a suggestion, please keep your exchange memo safe.
理由是生育等值交换水平的扩展表明人口增长不论怎样还是在减速。
The reason is that widening replacement-level fertility means population growth is slowing down anyway.
到2020年左右，全球生育率将第一次低于全球生育等值替换水平。
By about 2020, the global fertility rate will dip below the global replacement rate for the first time.
职员：好，我现在就为您填写这张兑换水单。您请在那里坐一会行吗？
Clerk: Good. I will fill out the exchange memo for you now. Why do not you take a seat over there for a moment?
顾客：啊，我想兑换些钱，但不知道怎样填写兑换水单。我不会看英文。
Customer: Oh, I want to change some money, but I do not know how to fill out the exchange memo.
这是兑换水单，请填写您的姓名，护照号码，国籍以及您打算兑换的金额。
This is an exchange memo. Please fill in your name, memo. passport number, your nationality and the amount you intend to change.
职员：好，我现在就为您填写这张兑换水单。您请在那里坐一会行吗？潀。
Clerk: : Good. I will fill out the exchange memo for you now. Why do not you take a seat over there for a moment?
职员：那么，如果我还可以提一个建议的话，请您保管好您的这张兑换水单。
Clerk: So, If I may make a suggestion, please keep your exchange memo safe.
职员：那么，如果我还可以提一个建议的话，请您保管好您的这张兑换水单。
Clerk: So, If I may make a suggestion, please keep your exchange memo safe.
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