preschool - a special school that young children attend before elementary school 幼儿在小学之前就读的学校，幼儿园
【例句】
Preschool is a school for children between two and five years of age
幼儿园是给〔2至5岁孩子的〕上的学校。
prepare - to get ready for an event before it happens 在事件发生之前做好准备，准备
【例句】
Her parents were busy preparing to go on holiday.
她的父母正忙于准备度假
predate - (verb) something that happens before another thing happens 在另一件事发生之前发生的事情，早于
【例句】
These dinosaur bones predate humans.
这些恐龙骨骼早于人类。
prevent - to stop something before it happens 发生某事之前停止
【例句】
We were prevented from entering the site.
我们被阻止进入现场。
predict - to guess something before it happens 在事情发生之前猜测
【例句】
Sales were five percent lower than predicted.
销售额比预期低5%。
Re - 重新；再，又review - look again 再看
【例句】
We will review your situation and decide how we can help you.
我们会研究你的情况，然后决定如何帮助你。
redo - do again 再做
【例句】
You’ll have to redo this piece of work.
这工作你得重做。
reinvent - invent again 在发明 ，改造
【例句】
In short, we need to reinvent the toilet.
简而言之，我们需要彻底改造马桶。
revisit - visit again 重游；再访
【例句】
Ten years later, I revisited the school to find out what had changed.
十年后，我重回学校，看看它的变化。
Sub - 在…下方；进一步；分支；附属；次于submarine - an boat that floats under the water 在水下的船，潜艇
【例句】
submarine plant life
海生植物
subway - a train that runs under the ground 底下的火车，地铁
【例句】
the New York City subway
纽约市的地铁
subzero - below freezing temperature 低于冰点温度
【例句】
Even in summer the temperature is subzero here.
即使在夏天这里的温度也保持在零度以下。
substitute - a replacement (originally 替代(最初的)
【例句】
Our teacher didn't come to school today so we had a substitute teacher.
我们的老师今天没来学校，所以我们请了一位代课老师。
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