1、“在”是一个介词,一般不单独使用.它必须跟在名词或名词类的词后构成介宾短语,然后充当句子的状语成分; 2、”再”是一个副词,表示重复或第二次.一般是放在...
cion结尾的单词只有三个 coercion n. 强迫,威压,高压政治; scion n. 嫩芽,子孙; suspicion n.怀疑,疑心,猜疑 It was vital that the elections should ...
full of是形容词短语意思是满满的。后面必须有名词或代词。 例句 Venice is a beautiful city full of culture and history. 威尼斯是一座具有深厚文化和历...
challengeable adj. 挑战性的; 例句 I am good at the science subjects which are challengeable. 我的理科学得很好,我觉得这些科目比较具有挑战性。 Po...
southwest n. 西南方; southwestern adj. 西南部的;向西南的;来自西南的。 They sped through the southwest with the law hot on their heels. 他们飞速...
nicky英文名读法英[\'niki]。nicky的例句Nicky was a singer and TV Star,he also was a student(Nicky是一位歌手和电视明星,他也是一个学生)。 nicky的...
用分部积分解决 ∫ arctanx dx =xarctanx-∫ x d(arctanx) =xarctanx-∫ x /(1+x^2) dx =xarctanx-(1/2) ∫ 1/(1+x^2) d(1+x^2) =xarctanx-(1/2)ln(1+x^2)+C 在...
worthy adj. 值得的;有价值的; 例句 The exhibition contains nothing that is worthy of remark. 这次展览没有任何值得看的东西。 A successful ending ...