For example, the pattern o {2} would match two (and only two) o characters.
例如，模式o{2}将匹配两个(仅仅两个)o字符。
At 2 o 'clock we watch the news.
2点钟的时候，我们看新闻。
For example, if the complexity order of the current technique is O(n**2), speeding up the steps by 10x is a lot less helpful than finding an O(n) substitute.
例如，如果当前技术的复杂性等级是O(n**2)，那么将这些步骤加速10倍远不及寻找 O(n) 替代品来得有用。
And you can use letter collections (as you might in a regular expression), for example, to list the files with a "c" or "o" extension, as shown in Listing 2.
并且您可以使用字母集合(就像您可能在正则表达式中使用的那样)，例如，用于列出具有“c”或“o”扩展名的文件，如清单2所示。
O you can stop paying for cable TV and add at least 2 wonderful hours a day or more to your life.
只要不收看收费电视，你每天至少多出2个小时做其他有趣的事情。
The optimum flask culture conditions of rhamnolipid biosurfactant production from refined vegetable oil wastewater were investigated by using a Pseudomonas aeruginosa strain O-2-2.
通过摇瓶培养试验，研究了铜绿假单胞菌O-2-2以植物油精炼废水为原料生产鼠李糖脂生物表面活性剂的适宜条件。
Nicotinamide, an antioxidant, can efficiently protect cells and cell membrane from damage by free radicals and scavenge super-oxide radical(O-2) participating in inflammatory process.
烟酰胺是一种抗氧化剂，它能有效地预防细胞和细胞膜免去自由基的损伤，可消除炎症中起作用的超氧阴离子自由基。
There is no I/O manager in Linux: all I/O requests go to the file system at the beginning (see Figure 2).
Linux没有I/O管理器。所有 I/O请求从开始就进入文件系统（参见图2）。
The antioxidation experiment results showed that the scavenging effects of the acetone extracts of grape seed on superoxide radical(O - · 2) and 1,1 Dipheny1 2 picry1 hydrazy1(DPPH·)are strong.
抗氧化实验表明，葡萄籽丙酮浸提液对超氧阴离子自由基（O- ·2）和1，1-二苯基-2-苦肼基自由基（DPPH·）均有较强的清除作用。
Description CATALASE (ec 1.11.1.6), is an ubiquitous antioxidant enzyme that catalyzes the decomposition of hydrogen peroxide (h 2 o 2) to water and oxygen.
产品说明过氧化氢酶(EC1.11.1.6)是一种普遍存在的抗氧化酶，主要作用是催化过氧化氢(H2 O 2)分解为水和氧气。
That should be fine, Shall we say about 2 o 'clock?
应该没有问题，我们说定2点左右？
I'd like to know if I could change my appointment with MS Liu from 10 o 'clock Monday morning to 2 o 'clock Thursday afternoon.
我想知道是否能把我与刘女士会面时间从星期一早晨10点改成星期四下午2点。
What time is the mail delivered on Saturday? The mailman always comes at 2 o 'clock.
星期六的邮件什么时候运到？邮递员通常2点钟来。
Objective:To study the damage to cultured rat cortical cells due to nitric oxide (NO) and superoxide (O - 2), and to explore the relationship between NO and O - 2.
目的：探讨一氧化氮（NO）和氧自由基（O-2）对培养大鼠皮层神经细胞的损伤作用及两种损伤因素间的关系。
A: All right. How about 2 o 'clock this afternoon?
好吧，下午2点怎么样？
The baby was born at 2 o 'clock in the morning.
这婴儿是早上2点出生的。
I'll meet you in front of the gate at 2 o 'clock in the afternoon on Saturday.
周六下午2点我们在大门口见。
She used to work during night. I used to come home at midnight or 2 or even 3 o 'clock.
她在晚上工作，我则时常到了半夜或者2点甚至3点才回家。
PVFS sends a request to the meta-data server (steps 1 and 2 in Figure 4), which informs the requesting node about the location of the file among the various I/O nodes.
PVFS向元数据服务器发送一个请求（图4中的步骤1、2），这会通知请求节点有关文件在各个I/O 节点上的位置的信息。
The sulfamic acid used in the method of the invention has the formula R1R2NS(O)2(OH).
本发明方法中使用的氨基磺酸具有下述结构式R1R2NS（O）2（OH）。
Like isoflurane, sevoflurane reduced cerebrovascular resistance, cerebral metabolic rate, cerebral O 2 consumption, myocardial contractility and blood pressure.
像异氟醚那样，七氟醚可降低脑血管阻力、脑代谢率、脑耗氧量、心肌收缩功能和血压。
氧气浓度；
At 2 o 'clock in the afternoon we went to visit my grandma and grandpa.
在下午2点钟，我们去看望了我的奶奶和爷爷。
AIM: To investigate the mechanism of endothelium-derived microparticles (EMP) -induced endothelial dysfunction and the role of superoxide anion (o - · 2) in EMP-induced endothelial dysfunction.
目的：探讨内皮衍生微粒(EMP)诱导内皮功能失调的机制和氧自由基(O -·2)在EMP诱导内皮功能失调中所起的作用。
At about 2 o 'clock on the afternoon of July 14, 1960, we arrived at Kasekela, a campsite midway along the 10-mile coastline of the reserve.
1960年7月14日大约下午两点，我们到达了露营地凯瑟克拉，它位于自然保护区10公里长的湖岸线半路上。
I was watching TV at 2 o 'clock this afternoon.
下午两点时我正在看电视。
I was watching TV at 2 o 'clock this afternoon.
下午两点时我正在看电视。
应用推荐