Penetration core
[机] 增压砂心
🧩 词语组成解析
penetration
[,pɛnɪ'treʃən]
n. 渗透;穿透;[军]突破;洞察力;
core
[kɔ:]
n. 中心，核心，精髓;果心，果核;[地质学]地核;[计] 磁心;
vt. 去（果）核，挖去…的果心;提取岩芯（样品）;
🗣️ 情景例句
and I'm real exhausted.
我实在是精疲力竭了。
More of our worries come from within than from without.
烦恼发乎内者多于发乎外。
For example, with their help China can send its TV and radio programmes to the other side of the world.
例如，在卫星的帮助下，中国能把自己的电视及广播节目传送到地球的另一边。