Suddenly he found himself awake and fully alert.
突然他发觉自己醒了过来，而且高度警觉。
我们必须高度警惕。
Suddenly he woke up and was fully alert.
突然他醒了过来而且高度警觉。
By now, my companions, fully alert, were firing at other targets down the slope.
那时候我的同伴全都清醒了，并朝山坡的其他目标射击。
Health workers must be fully alert and samples must be taken and sent to laboratories.
卫生工作人员必须保持高度警惕，必须搜集样本并送往实验室。
Japan may be hit at 0300 GMT on Sunday, the country's meteorological agency said, calling for people to be fully alert.
日本气象局说该国可能在格林尼治时间周日0300被袭，要求人们必须保持充分警惕。
Here are a few things I've found helpful to reduce the transition period from being asleep to becoming fully alert.
这里是一些能有效地帮你从半睡半醒到神清气爽的小窍门，我相信它们会对你很有帮助。
During the episodes, she could hear coworkers speak but did not feel fully alert, and she had to hold on to a support to avoid staggering or falling.
发作期间，她能够听到同事说话但不能感到完全清醒，并且她必须抓住支撑物来防止摇晃或跌倒。
However, my grandmother, fully alert and in control despite her advanced age, demanded that the most valuable relics be stored in the living room where she could keep an eye on them.
然而，我的祖母非常的警觉，执意把这些贵重的文物就这么放在客厅，这样她可以看着点儿。
"They now seem to be on high alert, fully engaged and thinking creatively about what they can do and what is next," he said.
他说：“他们现在似乎要保持高度警惕，充分参与并创造性地思考自己能做些什么，未来会怎样。”
The young people should be fully aware of its harm, be alert and have self-respect.
作为年轻的一代，我们应该认识到艾滋病的危害。
The young people should be fully aware of its harm, be alert and have self-respect.
作为年轻的一代，我们应该认识到艾滋病的危害。
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