First-time notebook entry

Today is a the last day of Golden week(GW).
Is Are there holidays like GW in other country countries?
In Japan, there are holidays for about a week on from the end of April to the beginning of May.

I work in the hospital and encounter many foreigner patients come to my job space.
I want to become to speak well with those people (in their own languages).

Cars pollution

In the recent time years, the lifestyles of the people who live in the cities hashave gradually changed until becoming addicted on the most used method of we cannot live without cars as the means of transport. I'm talking about cars.
As a result, the huge number of them affects every day our surrounding environment every day.

Eliminating cars from big cities might be impossible but reducing them is necessary.
Creating more pedestrian areas walkways and improving public transports could surely cut down the number of four-wheeled vehicles down in order to make the air more healthy.

Another way to reduce the smog - which is already tested in some cities as like Amsterdam - is to create efficient cycling areas paths with which to link throughout up the town (this sounds awkward still).

Unfortunately, as I said before, it's impossible to eliminate the problem completely. We can't ignore cars' usefulness and our need to move freely. We can only try to improve the situation and do damages focus on harm reduction to so that we may breathe better air and limiter the pollution that they product produce.

Electrochemistry

My name is Sveta. I am from Russia. I have got a master’s degree in 2010. I worked in the General Chemistry Department of the University (which? -- you used "the") for 4 years. In March of this year I came to Singapore to prepare for PhD courses (plural?).
I worked in the field of electrochemistry for about 7 years. The investigations were connected with about titanic alloys and heat-resistant alloys on the base of iron chrome and nickel. I explored electrochemical processes, selected optimum electrolytes and modes for electrochemical machining and electropolishing and carried out some corrosion studies. Also I worked on environmental issues, particularly reduction of hexavalent chrome by electrolysis and electroflotation for titanic sludge removal. I liked this part of (better to be "area in") electrochemistry and I want to continue my research in this field.

(I'm not sure if "machining" or "chrome" is correct, as this is not my field. Also, I think you mean "titanium".)

It is just a reordering of the words "wrenched doors open" (not specifically any particular set of doors). Instead of saying "wrenched the doors open", you can also say "wrenched open the doors" to mean pulled forcefully to open a particular set of doors (that you were talking about previously, or can be inferred from the context). In fact, it is ordered this way to make it sound nicer in parallel with the next part "marched along corridors".

It depends on the verb. E.g. They were quarreling over how to get the job done.

Is that this correct?

Sara: I guess to until you try, you will never learn.
Tom: That's the spirit, Sara.

サラ: 試さなければ学べないね。
トム: その調子だよサラ。