1. Build a tree in memory Pro: Easy to program Con: You quickly run out of memory using this method. 在内存中建立一个树。优点：编程容易，缺点：利用这种方法你很快就会用完所有内存。
2. We specialist in car maintenance include air-con service, repairing as well as car audio system upgrade. 本店提供专业的汽车维修，包括引擎服务，冷气维修，以及专业的音响改装。
3. This con?guration includes as many internal interactions as possible ("secondary structure"), and as a result it is randomly coiled, or folded into a shape resembling a bean. 这种形状包含了尽可能多的内部的相互作用（“二级结构”），而且由于它是随机卷曲或折叠成一个类似“豆”的形状的。
英英解释
n.
1. an argument opposed to a proposal
2. a person serving a sentence in a jail or prison
3. a swindle in which you cheat at gambling or persuade a person to buy worthless property v.
1. deprive of by deceit
2. commit to memory; learn by heart adv.
1. on the negative side
