Lead tetraalkyl
[化] 四烷基铅
🧩 词语组成解析
lead
[lid]
vt. 领导;引导;指挥;
vi. 领导;导致;用水砣测深;
n. 铅;领导;榜样;枪弹;
adj. 领头的;最重要的;领先的;
🗣️ 情景例句
I hope so.
希望如此。
I'm afraid not. She doesn't have any openings in the morning.
恐怕不行。上午她没有空。
Then he sat there and looked at it for three hours! He didn't write a word!
然后他就坐在那里，对着考卷看了3个小时，一个字也没写！