An explosive is a substance or device that can cause an explosion.
There were traces of explosives in the bedroom.
对于“explosive”，我们最常见的意思是它作为形容词，表示“会爆炸的;能引起爆炸的 ”或者“（增长）爆炸性的，迅猛的 ”
这里再补充一个它的熟词生义 ，作为形容词，形容人时还可以表示“易怒的;暴躁的 ”
She was unpredictable, explosive , impulsive and easily distracted.
“short ”的中文意思也可以表示“暴躁的;易怒的 ”【If you have a short temper, you get angry very easily.】
She is an awkward, self-conscious woman with a short temper.
(law 律) a crime that sb is accused of committing.
①They were found guilty on all counts .
②She appeared in court on three counts of fraud.
at the last count 据最新消息
At the last count , 400 people had agreed to join.
count down (to) 倒计时 【to think about a future event with pleasure or excitement and count the minutes, days, etc. until it happens】
She's already counting down to the big day.
count against sb (被)认为对某人不利 【to be considered or to consider sth as a disadvantage in sb】
For that job her lack of experience may count against her.
A refrain is a comment or saying that people often repeat.
Rosa's constant refrain is that she doesn't have a life.
关于“refrain”,其实还有一个熟词生义，表示“（歌曲的）叠句，副歌部分 ”【A refrain is a short, simple part of a song, which is repeated many times.】
a refrain from an old song.
同时，关于“老套的”，tired 也可以表示“陈旧的;陈腐的 ”
【If you describe something as tired, you are critical of it because you have heard it or seen it many times.】
I didn't want to hear another one of his tired excuses.
同时，我刚好想起来最近背的一个同义词：hoary adj.古老的;陈旧的;老掉牙的【If you describe a problem or subject as hoary, you mean that it is old and familiar.】
the hoary old myth that women are unpredictable.
这里补充一个更常见的表达：cliche /ˈkliːʃeɪ/【a phrase or idea that is boring because people use it a lot and it is no longer original】
If it doesn't sound like too much of a cliché , our world is constantly changing, and it's changing quickly.
Matt Haig的新书 The Midnight Library 也出现了这个表达：
If you say that a subject or activity is a particular person's province, you mean that this person has a special interest in it, a special knowledge of it, or a special responsibility for it.
①Arvo avoided committing himself. 'I'm afraid that's not my province,' he replied.
②Industrial research is the province of the Department of Trade and Industry.
看到这个单词，我联想到一个意思相近的熟词生义：preserve n.专属工作；独占的活动领域 【If you say that a job or activity is the preserve of a particular person or group of people, you mean that they are the only ones who take part in it.】
The conduct of foreign policy is largely the preserve of the president.
If someone fans an emotion such as fear, hatred, or passion, they deliberately do things to make people feel the emotion more strongly.
He said students were fanning social unrest with their violent protests.
《新闻周刊》一篇题为 Arab Spring Reckoning 的文章也出现了这个表达：
同时再补充一个短语表达：fan out 四散;散开【If a group of people or things fan out, they move forwards away from a particular point in different directions.】
Korontzis picked up his hand slowly and fanned out the cards one by one.