Pertechnetate
高锝酸盐
🗣️ 情景例句
I went into business for myself
我当初自己开业
A clear conscience is a soft pillow.
问心无愧，高枕无忧。
He explained that his diet was so strict that he had to reward himself occasionally.
他解释说，他的饮食控制得太严格了，以致不得不偶尔奖赏自己一下。