To keep...alive
牢记...
🧩 词语组成解析
to
[tu,tə]
prep. 向，朝着;到;关于;属于;
adv. 朝一个方向的;到某种状态;关闭;
🗣️ 情景例句
Young motorists all drive too fast.
年轻人的车都开得飞快。
After dinner, they adjourned to the study to talk.
晚饭后，他们到书房谈话去了。
and found our then prevailing primitive state completely uninteresting to their own advanced knowledge.
并且发现我们地球当时普遍存在着的原始状态同他们先进的知识相比是索然无味的。