Valida
n. 有效霉素
🗣️ 情景例句
I have a lot of work to do to get ready for tomorrow.
我得为明天做许多准备工作。
Have but few friends though many acquaintances.
朋友要少，熟人要多。
He mentally visualizes a complex form from all round itself;
他的大脑能从物体周围的各个角度勾画出其复杂的形象，