Scarce metals
稀有金属
🧩 词语组成解析
scarce
[skɛrs]
adj. 缺乏的，罕见的;
adv. 勉强;仅仅;几乎不;简直不;
五金
🗣️ 情景例句
May I take a picture of you and your little boy?
我可以替你和你的小男孩拍一张照吗？
It's a dark town.
这是一个黑暗的乡镇。
If it is not a question of resting the body, then perhaps it is the brain that needs resting? This might be a plausible hypothesis were it not for two factors.
如果睡眠的功能不是在于使身体得到休息，那么也许是让大脑得以休息？若不是下面两点，这种假使似乎是有道理的。