hard tack

同根派生

Thisis a set of six rations consisting of a biscuit substitute, algae hard tack,algae crackers, coffee bag, coffee can, and water packet.
这是一套六包的口粮组成的饼乾代替，藻类硬钉，藻类饼乾，咖啡袋，咖啡可以和水包。
It is hard to sleep without a cooler in this room.
没有空气调节器，在这间屋里很难入睡。
John felt it hard to rig out his family.
约翰感到难以为一家大小置备衣着。
The hard core in the party make all the decisions.
这个党的核心成员决定一切。
Hard copy is computer output on paper, printing or graphics.
硬拷贝是出现在纸上、印刷上或图表上的电脑输出。