Warm the baby bottle and test a drop on your wrist.
把奶瓶温热,滴一滴在手腕上试温度。
Sterilize every baby bottle in boiling water after the feed.
喂完奶后,把每个奶瓶都用开水消毒。
在美国常常只说 bottle。瓶口的奶嘴叫 nipple。