Co-chaired
(co-chair 的过去分词) n. 共同主席；联合组长
🧩 词语组成解析
[医] 钴(27号元素)
vt. 主持（chair的过去式与过去分词形式）
🗣️ 情景例句
Hi, Michelle.
嗨， Michelle。
We've increased our efficiency by 20% through automation.
通过自动化我们的效率增加了20%。
The twins took the basket from the boat and put it under the tree.
双胞姐妹把篮子从船上拿起，放在树下。