英语翻译祝你度过美好的一天!上学不要迟到!让我们一起去公园吧!我必须7点前到达.你一定不要让大门敞开.他不可能在这么短的

Have a nice day!
Don't be late for school!
Let's go to the park!
I must arrive before 7：00.
You must not leave the door open.
He could not finish so much work in such a short time.
Keep calm under dangerous conditions is very important.
The doctor told him to stay away from junk food.
Risk of parents should warn children swimming in the lake.
I have no idea what he is saying.

Difficulties sometimes can't keep clear of.