没有办法阻止观众用录像带录下电影。
There is nothing to stop viewers from recording the films on videotape.
阻止所有的学生带手机去学校是不明智的。
It is unwise to stop all the students from taking their phones to school.
当时的任务很紧急：阻止饥荒蔓延、复苏经济，或承担危机所带后果的风险。
The task was urgent: to prevent starvation and make the economy work, or risk the consequences.
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