叶绿素是形成绿茶干茶色泽和茶汁汤色的重要成分。叶绿素本身就是一种极不稳定的物质，在光和热的作用下，易产生置换和分解反应，使翠绿色的叶绿素脱镁反应生成褐色的脱镁叶绿素。这种脱镁叶绿素的比例达到多少以上时，茶叶就会出现显著的褐变。（）
I know you're a little bit nervous about your job interview.But I think you do great.Go get them. 我知道你去面试有点紧张。但是你很棒的,你一定行,去试试吧。 4.Be running out of time时间快没了,机会快没了。例句 We're running out of time.The report is due in 15 minutes,and we'...
What to Eat in Lanai Though it's the smallest inhabited island in Hawaii, Lanai manages to provide a diverse range of culinary offerings. If you're on a budget and in search of a local haunt, head to Blue Ginger Café, which past visitors recommended for its burger, homemade bread and...
aParticipated in dramatics 参加dramatics[translate] amass of trace amount 痕量大量[translate] aan electronic toy 一个电子玩具[translate] awhat do people eat during the festival 什么居于在节日期间,吃[translate]
If you're planning a vacation to O'ahu, Hawaii, here are editor-approved recommendations for where you should stay, eat, and play on the island.
how 和what的区别：区别1：用途不同- How：用于询问方式、方法、程度、情况或状况。例子：- How do you bake a cake?（你是如何烤蛋糕的？）- How much money do you need?（你需要多少钱？）- What：用于询问事物的名称、性质、描述或选择。例子：- What is your favorite color?（你最喜欢...
a我打算去夏威夷度假 I planned Hawaii takes vacation[translate] a多项选择题 Many item of choice questions[translate] aRemember everybody else in your year is in the same boat. 记住所有的人在您的年是在同一条小船。[translate] aI never know you do not believe tale 我从未知道您不相信传说[tran...
A.To go camping in the mountains B.To read in a library C.To go surfing in Hawaii 19.How long is the family out for vacation? A.Three days B.Five days C.A week 20.Who is babysitting his son? A.His aunt B.His uncle C.His sister 点击展开完整题目 查看答案和解析>> 听力 A)从...
This was a local delicacy that was recommended to us by several people in the Azores. We weren’t sure what they were, not knowing Portuguese, but soon found out that they are barnacles! Yes, barnacles! Yes, you can eat barnacles! Are they tasty? I didn’t think so but to each thei...
Meanwhile, most young people in the West are expected to leave what could be life's most momentous decision—marriage—almost entirely up to luck. 同时,人们认为西方的大多数年轻人把婚姻这一可能是人生最重要的决定几乎完全交由命运来安排。 柯林斯高阶英语词典 He drinks what is left in his glass ...