The answer is to provide a more useful type of exception that also contains a lower-level exception. Listing 1 shows a simple ApplicationException that does just this
答案是提供一类更有用的异常，它还包含低级异常。
Friday USES level 2 and since Thursday USES level 1, a lower level, RMAN will backup changes since Thursday.
星期五使用级别2，由于星期四使用级别1——较低的级别，所以RMAN将备份星期四以后的更改。
In a typical software system, function calls flow downward from higher-level components to lower-level ones; whereas events percolate up in the opposite direction. Figure 1 illustrates this pattern.
在典型的软件系统中，函数的调用流是从较高级部分到低级部分进行的；而事件是以相反的方向过滤的，如Figure1所示。
Cumulative incremental backup on the other hand, backs up all the blocks used since the most recent backup at level n-1 or lower.
另一方面，累积增量备份将备份自最近在级别n - 1或更低级别上进行备份以后使用的所有数据块。
Peaks in the Black Mountains range between 1, 500 m and 2, 700 m above sea level, and fast-flowing rivers have carved out deep gorges in the lower mountain areas.
黑山顶的山脉在海拔1500米到2700米之间，急流在较低的山区冲刷出很深的峡谷。
Oil pan shoulder function due to the uniqueness of oil cooling, so the oil pan was semi-damping enwrapped in the experimentation , The results showed a piece of sound power level lower 1.
由于油底壳担负着机油散热功能的特殊性，试验对油底壳采用半约束阻尼包裹处理，结果显示整机声功率级降低了1。
Hemoglobin and hematocrit levels at 1 day after surgery and albumin level before surgery was significantly lower than in control group.
谵妄病人术后第1天的血红蛋白和红细胞压积，以及术前白蛋白水平均显著低于对照组。
The results have shown that (1) LTC would keep its positive vorticity a stronger value in lower level and decay slowly while STC would decrease quickly after landfall.
结果表明：(1)LTC在陆上长久维持过程中，其低层正涡度衰减缓慢并保持一定强度。STC登陆后正涡度减弱较快。
The following results are of great importance: (1) the oxidation power of roots in wide—space planting keeps a reasonable level (lower by 17.5%—36.1% per gram fresh weight).
尤以以下三方面的结果更具有意义。 （1） 水稻每克鲜根的氧化力低于对照17.5%—36.1%。
The resource of fresh water in China is in the lower level of the world, which is only 1/4 of the average in the World.
中国的淡水资源总量处于世界较低水平，人均占有量只有世界平均水平的1/4。
Plasma ET-1 level after EVL was not significantly lower than that before EVL.
套扎后et - 1水平较套扎前有所降低，但差异无显著意义。
For often work under high pressure gear pump, the working pressure shall be lower than the rated pressure of the pump 1 ~ 2 pressure level.
对于经常工作于较高压力下的齿轮泵，其工作压力应比泵的额定压力低1 ~2个压力级。
Under similar neurological level, better AIS(ASIA impairment scale) and better lower extremity motor score mean better ambulation capability 1 year after injury.
神经平面基本一致的情况下，伤后1个月时下肢运动评分越高的患者，伤后1年时的步行能力越好。
The results showed that: (1) Migrant children's level of family economic status and family functioning were significantly lower than those of urban children.
结果表明：(1)流动儿童的家庭经济状况和家庭功能均显著差于城市儿童。
The study results show that: (1) Personality tendency has a negative relationship with social support, that is to say, the level of extroverts' social support is lower than that of introverts.
研究结果表明：(1)人格倾向与社会支持之间存在负相关。即外倾性个体的社会支持水平低于内倾性个体的社会支持水平。
Lycopene content in yellow color fruit was significance lower than others at 5% or 1% level in whole fruit development period.
黄果的番茄红素含量在各时期均显著或极显著低于其他品种。
The expression level of DLC-1 gene in the low-differentiated PHC tissues was much lower compared with the high and middle differentiated PHC tissues (P<0.01);
低分化肝癌组织中DLC-1基因表达水平低于高、中分化肝癌组织中DLC-1基因表达水平，差异有高度统计学意义（P<0.01）；
Special Summon 1 Level 2 or lower Warrior-Type monster from your Deck.
从自己卡组把1只等级2以下的战士族怪兽特殊召唤。
Special Summon 1 Level 2 or lower Warrior-Type monster from your Deck.
从自己卡组把1只等级2以下的战士族怪兽特殊召唤。
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