The central notion in commutative algebra is that of a prime ideal.交换代数中最核心的概念就是素理想.It'should be clear that vector addition is commutative.可清楚地看0剑0矢量加法满足对易律.The groups of the solvable equations are commutative.可解方程的...
...the river police, whose headquarters are just upstream of the Isle St Louis...总部设在圣路易岛上游的水警The barriers are lethal to fish trying to swim upstream.这些障碍物对于想要往上游游动的鱼儿来说是致命的。Steps lead down to the subway from the upstrea...
Both players have been suffering from niggling injuries.两名运动员一直在忍受轻微的伤痛。She had niggling doubts about their relationship.她时常对他们的关系有一丝疑虑。It's been niggling at my mind ever since I met Neville in Nice.自从在尼斯见到内维尔后，我一直忐...
For the Shetland Islands, see inset.关于设得兰群岛，见小地图。A few earthworms have been reported from the South Shetland Islands in Antarctica.少数蚯蚓曾发现于南极洲的南塞得兰岛....
Daily brushing of the skin helps the skin expel toxins...每天擦洗皮肤有助于皮肤排毒。They threatened to expel him from his adoptive country.他们威胁将他驱逐出他的移居国。They were told at first that they should simply expel the refugees.一开始有人告诉他们应该直...