161.But at the core of those little fears there is often a much bigger one:that they won't be alive Tong enough to support and protect their child.

英语四级译文:
但是，在这些微小的恐惧背后是更为巨大的恐惧:他们害怕自己活得不够长，无法抚养和保护自己的孩子。

四级词汇讲解:
本句的主干是there is often a much bigger one o that引导定语从句，修饰one。core本义为“果核”，本句中使用的是它的引申义“核心”。如:
1) He ate the plum, and threw the core away.他吃掉了李子，扔掉了果核。
2) The core of our appeal is freedom of speech.我们的核心要求是言论自由。

英语四级考点归纳:
alive, live, living, life都是与“生命，活着”有关的词，它们的区别在于:

※ alive是形容词，意为“活着的”。如:
The injured man is unconscious but still alive.受伤的人不省人事，但仍活着。

※ live可以作动词，表示“活;居住”。如:
People cannot live without air.没有空气，人类就不能生存。

此外，live也可以作形容词，意为“活的”。如:
The cat is playing with a live mouse.猫在戏弄那只活老鼠。

※ living可以作形容词，意为“活着的”。如:
He biographiaed many famous living painters last year.去年，他为很多在世的知名画家写了传记。

此外，living也可以作名词，意为“生活;生计”。如:
1) The judge advised him to amend his way of living.法官劝他改变生活方式。
2) What do you do for a living?你靠什么谋生?

※ life是名词，意为“生活;生命”。如:
I got to know that my mother had a hard life in her youth.我得知妈妈在年轻的时候生活很艰辛。