2017年3月7日内容（周一）
Merriam-Webster’s Vocabulary Builder

词根: phos / phot
词根释义：light
词根背景知识补充：photo，这个词跟light（光）有啥关系呢？来看解释：photo (photography) is the use of light to create an image on film or paper.

1. phosphorescent [,fɔsfə'resnt]
定义: (1) giving off a glow that continues after an energy source has stopped transmitting energy; (2) giving off a glow over a period of time without producing noticeable heat
例句: The boat’s wake glittered in the night with phosphorescent sea creatures stirred up by its passing.
例句语法结构：主谓
例句中文翻译：小船的尾迹在夜里闪烁着，伴着身上发出磷光的海生物经过时搅起的光亮。
单词中文意思及词性：phosphorescent adj. 发出磷光的
介绍段落精简句型解析及推荐背诵句式：来个句子把这个词的形容词和名词示范一下：Some minerals are naturally phosphorescent as well, and new chemical combinations can produce long-lasting phosphorescence without heat. 有的矿物质天然就会发光，而新的化合物会在不加热的情况下发出持久的磷光。

2. photogenic
定义: very suitable for being photographed
例句: Visitors to New England are often disappointed to find that the photogenic small towns with white churches and tidy houses are actually few and far between.
例句语法结构：主谓宾，宾从
例句中文翻译：去新英格兰的游客们通常会比较失望地发现，有着白色教堂和整洁小屋、适合拍照的小镇又少又相距甚远。
单词中文意思及词性：photogenic adj. 上镜的；适宜摄影的
介绍段落精简句型解析及推荐背诵句式：这个词最开始是表示“produced by light”，而且主要用在科学方面。现在科技层面上的意义大家都不怎么用了，而经常用在景物、人物、动物身上。

3. photon ['fəutɔn]
定义: a tiny particle or bundle of radiant energy
例句: The idea that light consists of photons is difficult until you begin to think of a ray of light as being caused by a stream of very small particles（粒子）.
例句语法结构：同位语从句，until引导的时间状语从句
例句中文翻译：❤️a stream of 一连串。光是由光子组成的，这个想法很难理解，直到你想到光束是由一连串很小的粒子组成的。
单词中文意思及词性：photon n. 光子

4. photosynthesis [,fəutə'sinθəsis]
定义: the process by which green plants use light to produce organic matter from carbon dioxide and water
例句: Sagebrush survives in harsh climates because it is capable of carrying on photosynthesis at very low temperatures.
例句语法结构：主谓宾，because引导原因状语从句
例句中文翻译：我要多说几句harsh这个词，❤️harsh climate 严寒气候，harsh还可以形容人“严苛”。一串红在严寒气候下也能存活，因为它能够在低温下进行光合作用。
单词中文意思及词性：photosynthesis n. 光合作用
介绍段落精简句型解析及推荐背诵句式：这个词跟光有关，自然不用再多解释。远离不赘述，发音需注意。