Ich möchte etwas über mich erzählen. Ich bin Deutschstudent , aber ich möchte lieber im Selbstudium lernen,denn unser Unterricht geht zu langsam. Deshalb habe ich seit 1 Monat Aufsätze schreiben angefangen. Aber ich war erstaunt, wenn ich eine Aufsatz meine Deutschlehrerin sehen ließ, sie mochte ich jetzt Aufsatz nicht schreiben,weil ich Fehler machen wurde. Dafür habe ich kein Verständnis. Ohne Fehler wird man keinen Fortschritt gemacht,nicht wahr? Aus diesem Grund bin ich italki gekommen!

The principle of air cooler Evaporative cooler is one of the oldest home appliances, even older than air conditioner. The operational principle of evaporative cooler is simple：Water is pumped from the water tank to the top across the wet curtain. Then the air goes through the wet pads，combiming with some water and beomes vapor which lowers the temperature.Finally, the cool air is given out by the fan.

Can you understand the principle of the air cooler I just wrote？If you can't,please help me improve. Evaporative cooler is one of the oldest home appliances, even older than air conditioner. The operational principle of evaporative cooler is simple：Water is pumped from the water tank to the top through the wet curtain. Then the air goes through the wet pads，combiming with some water and beomes vapor which lowers the temperature.Finally,the cool air is given out by the fan.

What does it mean by saying "get some leverage to it"? Could anyone just tell me ?

What does "go into the snake pit" means?

What does it mean by saying "You would have done it already"?

If your board doesn't have the balls for it. What does this mean？ Could anybody tell me

What does" high-stakes metal round ” means? Could anyone explain to me ? And how to explain the word "metal" in the phrase?

There are many words to describe how big is something.What's the difference among the words below? colossal , gigantic , huge , vast , enormous , immense , tremendous , titanic . Seems a lot, but I hope you could help me.