单词hard--tack
na.: (航海用的)硬面包；粗劣的食品
网络: 航海用的饼干；硬饼干；压缩饼干
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。
I know his temper, like hard tack as cold and hard, and often you angry, in fact, that"s not my intention.
我知道自己的脾气，像压缩饼干一样又冷又硬，常常惹你生气，其实那并不是我的本意。
Hard-Tack Teacher and Star Candy
饼干老师星星糖