Hulbar swelling
[医] 球突(胚胎)
🧩 词语组成解析
swelling
['sweliŋ]
n. 肿胀;膨胀;增大;
v. 肿胀(swell的ing形式);增强;骄傲，自满;
🗣️ 情景例句
Well, in that case,
嗯，既然这样
It's easy to fall into a trap, but hard to get out again.
堕入陷阱易，脱离陷阱难。
and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.
因此，尽管制造这些工具的人的骨头早已荡然无存，但远古时代的石头工具却保存了下来。