It may be this burial custom that explains why the houses were packed in so tightly without streets.

也许正是这种丧葬习俗解释了为什么房子会排布得水泄不通，连街道的空间都没有了。

youdao

Everything has been so tightly controlled.

一切都控制的如此严格。

youdao

Mother, why do my baby s tiny fingers cling so tightly to mine?

妈妈，为什么我的小宝贝要紧抓着我的手？

youdao

"This will wedge itself in so tightly and completely block the airway that within minutes, because of lack of oxygen, a child will die."

VOA: standard.2010.02.23

The inner electrons are so tightly bound that they are for all intents and purposes, immobilized when it comes to reactivity.

内部电子被紧紧地束缚着,因此无论怎样，当进行反应时，它都是固定的。

麻省理工公开课 - 固态化学导论课程节选

There may be some sort of metaphysical laws that tie the two things so tightly together that you'll never actually get one without the other.

因为一些形而上学的定律,将两者紧密联系在一起,使你无法把其分离开来

耶鲁公开课 - 死亡课程节选

They fit so tightly together they are nearly impervious to rain and sun, outlasting all other colors.

FORBES: The Science of Small

They fit so tightly together that they are nearly impervious to rain and sun.

FORBES: The science of small

But not so tightly that entrepreneurs start to dread the prospect of a public listing.

ECONOMIST: The rise and fall of a great invention, and why it matters