Maillechort
铜镍锌合金
🗣️ 情景例句
You had better study hard.
你最好努力学习。
They've promised to keep both we quality and the quantity of the 300 bicycles in conformity with the contract stipulations.
他们已承诺那300辆自行车的质量和数量一定与合同规定相吻合。
The old lady though the was a fussy creature,
老妇人觉得巡官大惊小怪，