Pentitrate
四硝季戊四醇
🗣️ 情景例句
I have to cram all night for tomorrow's exams.
为了明天的考试，我得熬夜临阵磨枪。
This metal is harder than that one.
这种金属比那种硬。
'You needn't have said that,' my wife answered.
“你没必要这么说，”我妻子回答说，