Swallowed
vt.& vi. 吞, 咽（swallow的过去式与过去分词形式）
🗣️ 情景例句
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Books,like friends,should be few and well chosen.
书籍如朋友，宜少宜精选。
While the men had been working inside the ship, the air-line had been giving off oxygen.
当工人们的在船舱里干活时，供气管一直在排放氧气。