While her English was correct, it was peppered with French phrases.她的英语语法上没错，但是里面夹杂着很多法语短语。The book is witty and peppered with good one-liners.这本书诙谐幽默，妙语趣话随处可见。He was wounded in both legs and severely peppered with shrap...
In there compounds, the cyclopentadiene ring has only four hydrogens.在这些化合物里, 环戊二烯环只有4个氢.Those that are aligned perpendicular to the plane are called axial hydrogens.与平面垂直定向的氢叫做直立氢.A methane molecule is composed of one c...