in one hour 一般指一小时后到
I will arrive in one hour.我一小时后到.
within one hour 指一小时之内
Breastfeeding should start within one hour after birth.在婴儿出生一个小时之内就应该开始母乳喂养.
in one hour 一般指一小时后到
I will arrive in one hour.我一小时后到.
within one hour 指一小时之内
Breastfeeding should start within one hour after birth.在婴儿出生一个小时之内就应该开始母乳喂养.