rigid
/ˈrɪdʒɪd; `rɪdʒɪd/ adj
1 stiff; not bending or yielding 坚硬的; 不弯曲的; 刚性的
a rigid support for the tent 帐篷的坚硬的支柱
(fig 比喻) Her face was rigid with terror. 她吓得目瞪口呆.
2 strict; firm; unchanging 严格的; 坚强的; 不变的
a man of very rigid principles 原则性很强的人
practise rigid economy, ie be very frugal 厉行节约.