Picknometer
比重瓶
🗣️ 情景例句
Nice day, isn't it?
天儿真不错，你说呢？
Nothing is impossible (or difficult) to the man who will try.
天下无难事，只怕不努力。
For twenty years Gandhi played an important role in working for equal rights for Indians.
二十多年间，甘地在为印度人民争取平等权利的奋头中发挥了很重要的作用。