Relational algebra
[計(jì)] 相關(guān)代數(shù), 關(guān)系代數(shù)
?? 詞語組成解析
relational
[ri'le??nl]
adj. 親屬的，相關(guān)的，有關(guān)的;
algebra
['?ld??br?]
n. 代數(shù)學(xué)，代數(shù);
??? 情景例句
I heard that some tours actually go down into the canyon. Is that true?
我聽說有的旅游團(tuán)真正下到峽谷里去了。那是真的嗎？
They feel uneasy.
他們因不安而沒法鎮(zhèn)定下來。
and that their rims are clean and dry.
瓶口清潔干燥。