R-r interval
[医] R-R间期(心电图)
🧩 词语组成解析
🗣️ 情景例句
Shopping vouchers are ofter a good means of attracting customers.
购物优惠券是吸引顾客的好方式。
I think it's going to be too small.
我认为它将太小。
but few of us have skeletons in the cupboard.
但我们当中极少有人有柜中骷髅。