Theories
n. 理论（theory的复数形式）
🗣️ 情景例句
I know you'll be able to take care of it.
我知道你能够处理好这件事。
All bags contain an inner waterproof lining.
所有包内都有一层防水内衬。
Is there much of a difference in price?
价钱也有很大的分别吧？