二、unkind
adj.無情的;不夠和善的，不親切的;冷酷的
I think it's a bit unkind to describe the ship in those terms.
我覺得用那些字眼來形容這艘船有點刻薄。
三、castiron
鑄鐵制成的.,不屈的,嚴厲的
1、He is a man of cast-iron will.
他是一個意志剛強的人。
2、I have a small fireplace with a cast-iron surround.
我有一個帶鑄鐵邊飾的小壁爐。
四、acrimonious
adj 嚴厲的，辛辣的，刻薄的
The acrimony of his remarks alienated his audience.
他說話尖刻，這使觀眾和他疏遠了。
五、rigid
adj.僵硬的;嚴格的;（規(guī)則、方法等）死板的;剛硬的，頑固的
Its members are bound by a rigid code of ethics which includes confidentiality
它的成員受到包括保密在內的一套嚴格的倫理規(guī)范的約束。