Crystalchecked
晶体检定; 晶体稳定
🗣️ 情景例句
We'd wait until dark and make a fire,
我们等到天黑就升火，
Is he coming to dinner?
他回来吃饭吗？
Portable boiling elements that can boil small quantities of water are useful when the right voltage of electricity is available.
如果有相配的电压，可以煮少量水的便携式热水装置是有用的。