[日文] ない型

見ないといけません ＝ 見なければなりません

英文email結尾語

email 結尾除了常用的 "best regards" 之外，還有那些可以用呢？以下是一些其他的結尾用語：

cheers - 祝你開心

Many thanks - 多謝了

Have a nice day - 祝你有美好的一天

Enjoy the holiday - 假期愉快

To your success - 祝你成功

Keep up the good work - 繼續加油

Best wishes - 祝你一切順心

All the best - 祝你萬事如意

Good luck - 祝你一切順利

Take care and see your soon - 請保重，期待再見面

source: http://www.businessweekly.com.tw/blog/article.php?id=2010&p=4

[日文] "もう" 重音的差別

もう (1) - 已經

もう (2) - 再 

[日文] 大家的日本語第一課

 あのかた 是 あのひと 的禮貌形, [那個人]

どなた 是 だれ 的禮貌形, [那位，誰]

おいくつ 是 なんさい 的禮貌形, [幾歲]

Tiers of Data Center

Tier Level	Requirements
1	Single non-redundant distribution path serving the IT equipment Non-redundant capacity components Basic site infrastructure guaranteeing 99.671% availability
2	Meets or exceeds all Tier 1 requirements Redundant site infrastructure capacity components guaranteeing 99.741% availability
3	Meets or exceeds all Tier 1 and Tier 2 requirements Multiple independent distribution paths serving the IT equipment All IT equipment must be dual-powered and fully compatible with the topology of a site's architecture Concurrently maintainable site infrastructure guaranteeing 99.982% availability
4	Meets or exceeds all Tier 1, Tier 2 and Tier 3 requirements All cooling equipment is independently dual-powered, including chillers and heating, ventilating and air-conditioning (HVAC) systems Fault-tolerant site infrastructure with electrical power storage and distribution facilities guaranteeing 99.995% availability

reference: http://en.wikipedia.org/wiki/Data_center#Data_center_tiers

[Phrase] at once

1. at once  立刻
= right away

2. be at once + 形容詞 + and + 形容詞   不僅...而且...
= not only...but (also)...

3. all at once  突然間
= all of a sudden
= suddenly