Ppw
外围处理机字
🗣️ 情景例句
Yes, it is.
是的，没错。
He has lived here for a year.
他在这儿住了一年。[持续到现在的行为]
Since then, they have been trying to find out how the fire began.
从那时起，他们一直试图找出起火的原因。