Bsa
abbr. 农业科学学士（Bachelor of Science in Agriculture）；美国童子军（Boy Scouts of America）；牛血清蛋白（Bull Serum Albumin）
🗣️ 情景例句
Of course. I'm so sorry for Michelle.
当然。我为Michelle担心。
When one is about to act, one must reason first.
凡事要先思而后行。
Every day he leaves his home and walks to the lift.
每天他离家后就步行去乘电梯。