Balf
abbr. 支气管肺泡灌洗液（Bronchoalveolar Lavage Fluid）
🗣️ 情景例句
without cultural programs in our school.
我们的学校里没有文化活动。
That sounds OK. I'll need it from the 10th to the 14th.
听上去挺不错。从10号到14号我需要租一辆。
decided to take some presents to a children's hospital.
盖茨决定送些礼物给儿童医院。