1. This information is no longer retained within the computer's main memory. 这样的数据不再保留在计算机的主存储器中。
2. Heat could be retained as debris fall back into impact craters, creating an insulating blanket. 当碎片落回撞击坑时，热量可以被保留下来，形成隔热层。
3. At least some of the material must have retained the signal unaffected by subsequent changes in the environment. 至少有一些材料肯定保留了不受后续环境变化影响的信号。
4. The simplest explanation for this is that the axolotl lineage alone lost the ability to metamorphose, while others retained it. 对此最简单的解释是，只有蝾螈谱系失去了变形的能力，而其他族系则保留了这种能力。
5. Early immigrants to America from Europe brought with them a collective style of living, which they retained until late in the 18th century. 早期从欧洲到美国的移民带来了一种集体生活方式，这种生活方式他们一直保留到18世纪晚期。
