Grecc
abbr. Geriatric Research; Education; and Clinical Center (Seattle) 老年医学研究; GRIN rod external coupled cavity (laser) 缓变折射率棒状外耦合腔（激光器）
🗣️ 情景例句
We have four people in the family, my parents, my elder brother and I.
我家有 4 口人，我的父母，我的哥哥和我。
Take it easy.
想开点吧！
Where was it?
在哪里找到的？