The jewelry store is offering a ten percent discount on all opal necklaces this week.

這家珠寶店本週所有蛋白石項鍊一律打九折。

Please ship the opal earrings by express mail so they arrive before Friday's event.

請用快遞寄出這副蛋白石耳環，好讓它們在週五活動前送達。

During the sales meeting, we discussed importing high-quality opals directly from Australian suppliers.

在業務會議中，我們討論了直接向澳洲供應商進口高品質蛋白石。