Transition metals
[化] 过渡金属元素
🧩 词语组成解析
五金
🗣️ 情景例句
I've been trying
我一直努力
I'm sorry. I can't make it on Tuesday.
对不起，星期二我无法参加。
From one's own front door to home or foreign hills or sands and back again, everything is to hand.
从自己的家门出发到国内国外的山区或沙滩上露营然后返回，一切都很便利。