Birefringencemeter
双折射检查仪
🗣️ 情景例句
Frank, you've never played charades?
Frank，你从来没玩过哑谜？
Does the shop open at 9 am on weekdays?
这家店平日是早上9点开门吗？
I'm here! said Jim. And so is Polly!
“我在这儿！”吉姆说，“波利也在这儿！”