1. The gang commit three armed holdup on the same day. �����Ż���ͬһ�������������װ���١�
2. Gas holdup and liquid circulation in an internal airlift loop reactor were investigated. �о�������ʽ��ѭ����Ӧ���ڵ���������Һ��ѭ����
3. Exactly knowing the quantity of nuclear material holdup is very important for nuclear material accountability and critical safety. �˽��ڲ��˲������������Ժ˲��Ϲ��������ͺ˲����ٽ簲ȫ������Ҫ��
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n.
1. robbery at gunpoint
2. the act of delaying; inactivity resulting in something being put off until a later time