Bicylinder
双柱面透镜
🗣️ 情景例句
Win a few, lose a few. that's life.
有得也有失，生活就是如此。
As soon as he comes, we'll let him know.
他一来，我们就告诉他。
We'll order after we see the sample.
我们要看过样品才会下订单。