•Each person's genetic code is unique except in the case of identical twins.每个人的遗传密码都是独一无二的，同卵双胞胎除外。

•I'd recognise your handwriting anywhere - it's unique.无论在哪里，我都能认出你的笔迹——它太与众不同了。

•Do not miss this unique opportunity to buy all six pans at half the recommended price.购买全部六个平底锅只需半价——不要错过这难得的机会。

•As many as 100 species of fish, some unique to (= only found in) these waters, may have been affected by the pollution.有多达100种鱼类可能已经受到污染，其中有些在别的水域已绝迹。