1.长成：grow into
A boy grows into a man.
个人觉得grow up 是长大的意思
2.在危境中：in danger
He is in danger since the snake is close to him.
3.独自：alone/by oneself
He came alone.
He finished all the works by himself.
4.采取以下措施：take following measures/take measures as follows
grow up
in danger
by oneself
take measures as follow
第一个是长城吧！Great Wall
2.in danger of
3.alone
4.take the following measures
grow up
in danger
alone
take measures as follow
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