Stec
abbr. Shiga toxin-producing Escherichia coli 产志贺毒素的大肠埃希杆菌; Storage and Transport of Expiosive Committee 炸药储藏及运输委员会; strains of Escherichia coli 大肠杆菌菌株
🗣️ 情景例句
This is Alexandra Pappas, and this is my grandson Robbie,
这是Alexandra Pappas ，这是我孙子Robbie
I'm tired.
我累了。
It's often cold in November and it rains sometimes.
11月常常就冷了，而且有时下雨。