How do 你 express notes to a violin??? What does it mean 由 this and that? How will 你 know when to play your bow up 或者 down???

using short 或者 longer bow shorts will put feeling into the 音乐 and to use an up bow V and a down bow look like a staple 哈哈 XD hope i could help

I have been playing for 2 years but Im a 年 behind rmihulka and I dont know what express notes are! They can be good for short 或者 long notes?

i have no idea what 你 mean 由 this and that. 你 will know when to play up 或者 down when there is a slur 或者 a marking up 或者 down bow. generally pieces that start on the first beat start down and if it is a pick up it is usually up bow. to express notes, 你 can lean on them 或者 add vibrato
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hope this helps
i've been playing violin for 8 years ( private lessons) so i think 你 can trust me