天气真是变幻莫测。
The weather is really unpredictable.
to change unpredictably; unpredictable; erratic
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.
天气真是变幻莫测。
The weather is really unpredictable.
局势变幻莫测,要小心。
The situation is changeable; be careful.