But the delicate parts of the flowers risk being damaged by the cold.但花朵的纤弱部分极易冻伤

part of一部分

A part of this urgent task was allotted to us.

这项紧急任务的一部分分给了我们。

The plant appears to have an ingenious solution.这种植物似乎有解决问题的妙方

appear to看来像是； 看来似乎

The students appear to be completely out of hand.

学生们似乎已完全无法控制了。

They appear to be able to handle the problem.

他们似乎可以处理这个问题。

it also keeps out pollinating insects.也让授粉昆虫不得其门而入

keep out不许入内； 挡在外面

America must keep out of this war.

美国应该置身战争之外。

You should keep out of these things.

你不能牵涉进这些事。

the flowers warm up and suddenly start producing nectar.并突然开始制造花蜜

warm up变暖； 活跃起来； 热身

No matter how hard he tried, he just couldn't warm up to that proposal.

无论他怎样努力，还是对那项计划热心不起来。

We should warm up before our workout.

我们应该在练习前作准备运动。