Questions about example sentences with, and the definition and usage of "Needle"

In English, we have a phrase: "It's as hard as finding a needle in a haystack". The idea is that the haystack is very large and the needle is very small, so if you need to look for the needle, you are going to have a very hard time finding it. "Finding a good coffee shop around here is like finding a needle in a haystack!" I don't understand the part about the snowstorm

Desnecessário

Si había una aguja en el excusado antes de sentarse, si tiene sentido. :D

...NEEDLESS to say, let's get started on the project. Needless is used to suggest at something that is unspoken but is already known.

she stuck a needle in the man's arm. The needle pierced his thin skin. The metal on the needle was really cold.

They mean the same thing.

"No need for words" implies that everything is already known about something, so there are no words that can add new information to the discussion. "Needless to say" is used when the speaker is stating something that they believe is obvious. "It is, needless to say, cold in winter." "Fire will, needless to say, burn you." Hope that helps.

Usually, they are used to mean the same thing, but sometimes they mean a little differently. useless = cannot be used (broken, pointless) needless = unneeded (it can be used, but no one wants or needs to use it) OR needless = gratuitous ("needless violence" is violence for no reason, violence just because you want to be violent)

Crooked teeth

Putting a thread through the hole of the needle is better described as "threading the needle". Put a button my shirt with it is better described as "she is going to sew a button on my shirt". You don't have to say that she's going to see a button with the threaded needle, as it's implied. I would have said "She's threading a needle to sew a button on my shirt." Hope this helps!

"Finding a person in a crowded supermarket is pretty much like finding a needle in a haystack"

Grammatically, there are some minor issues In the second sentence I would use a period after we met each other otherwise it reads somewhat like a run on sentence. In the part that says we weren't classmate on same class you will want to change it to we weren't classmates in the same class. The beginning of the next sentence should also read Students as student is singular in nature. You can also eliminate the in as Students in my class were studying five subjects mainly: Mathematics, Biology, English, Contemporary Japanese and History flows better. For the last sentence you would want to change the we to was specialized in making things with needle and thread.

- Please avoid rain, sweat, and other moisture to avoid collapsing the shape or transferring the color. Do not launder. - Do not crush, applying force will collapse and/or crack the shape - The decorations are particularly delicate, do not twist or hit - The needle can cause injuries, handle with care. - Exposure to sunlight may cause discoloration of the white hat - Hats with velcro inside are size adjustable - The feather can be adjusted with steam from a distance - Do not bend feather during storage

when pigs fly = most likely impossible once in a blue moon = it's rare

yeah, it's not common in conversation. You could use it that way, though. But it might come off as sarcastic in casual conversations.

you're welcome

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got it, thank you!