Spst
[电] 单极单投
🗣️ 情景例句
It's not easy, but what is?
这不容易， 但什么事又容易了？
It's very cold outside.
外面非常寒冷。
Many more people are 'form-blind' than colour-blind.
形盲的人数比色盲的人数要多得多。