出错在所难免。
Making mistakes is unavoidable.
to be unavoidable (idiom)
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
Nice writing!
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
出错在所难免。
Making mistakes is unavoidable.
这次的损失在所难免。
This loss cannot be avoided.