Usually it is hard to get a simple substance . 一般得到一種單純的物質(zhì)很困難。
During germination, the seed is able to convert simple substances into the complexity of the living plant . 在發(fā)芽時,種子能把簡單的物質(zhì)轉(zhuǎn)變?yōu)榛畹闹仓陱?fù)合體。
The manufacture of thiamine from the simple substances present in the minimal medium does not take place in a single chemical reaction . 從最低培養(yǎng)基中的簡單物質(zhì)制造硫胺素,不是通過單一的化學(xué)反應(yīng)。
The mixture will resolve into four simple substances 混合物會分解成四個簡單的物質(zhì)。
The mixture will resolve into three simple substances 這種混合物可分解成三種單純狀之。