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I have read part of it and it looks to me like it is pretty easy to follow.
That needs to be rewritten. The picture shows two contrasting images, right? That is what you need to say.The set of drawings above vividly depicts the flower cannot undergo the tremendous wind and the rain.
Try:In one picture, although the wind and rain heavily outside, we still can see a flower bloom in the green house.
- In the one picture, although there is a driving rain outside, the flower in the greenhouse is untouched by the punishing rain.
Try:While, in the second picture, without green, the flower under the rain nearly to die.
- In the second picture, the flower outside looks like it has been severely damaged.
I'm trying to avoid offering too many revisions, since the essay really should be in your words, not mine. (Obviously, I have had mixed success doing that.)