Three noncyclic acetal-linked cleavable surfactants were prepared based on the optimum condition by condensation of para formaldehyde with polyethers O-9, O-15, O-20. The yield was 88.6%, 81%, 75%, respectively and the structure was determined by NMR.

Synthesis, characterization and near-Infrared luminescence of rare earth complexes with a noncyclic crown-type Schiff base

开链冠醚Schiff碱-稀土配合物的合成、表征及近红外发光光谱研究

Frontier orbital energies on noncyclic conjugated systems

非环共轭体系的前线轨道能量

Synthesis of noncyclic crown ethers with 1 phenyl 3 benzoyl thiocarbamide as terminal groups(ⅱ)

含有1－苯基－3－苯甲酰基硫脲端基的开链冠醚的合成（Ⅱ）

It is the same today that it always was and will never change.

它始终不渝,过去如此,现在如此,将来也永远不变.

It is the same today that it always was, and it will never change.

它始终不渝,过去如此,现在仍然如此, 将来也永远不变.

That said, we have always tried to keep the placement based in realism within the environment.

总言之, 我们将始终不渝的把真实的建筑融于环境.

His loyalty to his faith deserves our respects.

他对自己的信念始终不渝,令人敬佩.

We are committed to pursuing a win-win strategy of opening-up.

我们始终不渝奉行互利共赢的开放战略.

ZCIG will never change the faith of pursuing excellence and creating classics.

ZCIG人始终不渝追求卓越,创造经典.

We are all but kids at heart aren't we?

我们都怀抱著赤子之心不是 吗 ?

He is the most ridiculous bookstore owner, all day long disheveled, a bookstore is Lalilata.

他是世界上最荒唐的书店店主, 成天衣冠不整, 书店里也是邋里邋遢.

Just look at yourself; you're a complete mess.

看你这身上下, 邋里邋遢!

I wouldn't want to be that old. An old man is a nasty thing.

我可不想活到这么老. 老年人,邋里邋遢,讨人嫌.

Yes this solemn teaching building, spacious and clean, bright and clean classrooms ladder?

是这庄重的教学楼 、 宽敞整洁 、 窗明几净的阶梯教室?

Mine build and looked bright and clean office building, watching the apartment spotless, we are charmed.

矿区建设好了,望着窗明几净的办公楼, 望着一尘不染的公寓, 我们神往.

Every classroom in our school is bright and clean and takes on a new look.

学校里每间教室都窗明几净,焕然一新.

The diner was small, but bright and clean . Brand-new, built to resemble a converted railroad car.

这间餐厅虽小, 但窗明几净, 是新盖好的,故意搞得像是一节改造的火车车厢.

Even after her death, the effect remained and became even firmer as time goes by.

甚至在她逝去后, 影响历久弥坚,十亿个掌声依然如故.

Thirty years later, the focus has changed but the urgency remains the same.

30年以后, 关注点变化了但是环境保护的紧迫性依然如故.

The ivy leaf was still there.

那片常青藤叶子依然如故.