Multigrade
a. (润滑油)多级通用的,多品位的,稠化的
🗣️ 情景例句
The village was filled with people--the weather was so nice.
镇上挤满了人--因为天气好的缘故。
Where are the stairs?
楼梯在哪里呢？
One day, the man downstairs went to talk to the man. He went upstairs and knocked the door.
一天，楼下人去找楼上人谈谈。 他上楼敲门。