如果不加限制，城市往往会联合发展成越来越大的集合城市。Cities, if unrestricted, tend to coalesce into bigger and bigger conurbations.数以百计的孩子们被集合起来。The children were assembled in hundreds.全体学生获通知到大礼堂集合。All the students were asked to assemble in the ...
Objective To investigate the non - alkaloid constituent of Hippeastrun vittatum ( Amaryllidaceae ).目的研究 石蒜 科植物 花朱顶红中非生物碱类成分.I am a private collector of Amaryllidaceae.我是一名收藏石蒜的私人收藏家.Molecular Cloning of a Novel Mannose -...
We tend to meet up for lunch once a week.我们往往每周共进一次午餐。We had lunch the other day at our favorite restaurant.前两天我们在最喜欢的餐馆吃了午饭。Grace laid out the knives and forks at the lunch-table.格雷丝把刀叉摆放在午餐桌上。...