Preleukemia
白血病前期
🗣️ 情景例句
That's a relief.
现在我放心了。
He has a letter.
他有一封信。
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。