Specificity of catalyst
[化] 催化劑特性; 催化劑選擇性
?? 詞語組成解析
n. 特異性, 專一性, 特殊性, 特性, 特征\\n[化] 專一性
of
[?v]
prep. 關(guān)于;屬于…的;由…制成;
aux. 助動(dòng)詞 [非標(biāo)準(zhǔn)用語、方言] =have [主用于虛擬語氣];
??? 情景例句
I want a package deal including airfare and hotel.
我需要一個(gè)成套服務(wù)，包括機(jī)票和住宿。
He has gone home.
他已經(jīng)回家去了。
He could not wash himself or get dressed.Instead, his sister or his parents had to help him.
他自己不能洗澡或穿衣服，他的姐姐或父母親就只好幫他的忙。