Pertechnetate
高锝酸盐
🗣️ 情景例句
Hey, you know? There's still some film left on this roll,
嘿 ，知道吗？ 这一张 ，还有一些底片，
When will the contract be ready?
合同何时准备好？
The workers all wear thick clothes and glassed over their eyes.
工人们作都穿着厚厚的衣服并且戴着眼镜。