Incomplete penetration
[化] 未焊透
🧩 词语组成解析
penetration
[,pɛnɪ'treʃən]
n. 渗透;穿透;[军]突破;洞察力;
🗣️ 情景例句
Challenge, the feeling of accomplishment, and knowing that you have made a contribution.
挑战，成就感和知道自己做出了贡献。
Kind words are worth much and cost little.
口头方便不费力。
There are many different varieties of bee.
有很多不同种类的蜂。