Ionization is the name of the change: atoms or molecules becoming ions. A gas can go through ionization if a strong electric field, or certain kinds of light and radiation, knocks electrons off its atoms. Once those ions are there, the gas can carry a current.

Ionizationionization（游離、離子化） is the name of the change指的是這種變化的名字 atoms or molecules becoming ions原子或分子變成離子 A gas一種氣體 can go through ionization可以經歷ionization if a strong electric field如果有強電場 or certain kinds of light and radiation或某些光和輻射 knocks electrons off its atoms把電子從它的原子上打掉 Once those ions are there一旦這些離子出現了 the gas can carry a current這氣體就能導電

In the lab this is a careful, measured process. In ordinary life you are more likely to meet it on warning signs about “ionizing radiation” — the kind that can knock electrons off atoms in living cells, which is why it can do harm.

In the lab在實驗室裡 this is a careful, measured process這是個很仔細、有分寸的過程 In ordinary life在日常生活中 you are more likely to meet it你比較可能是在 on warning signs about "ionizing radiation"「游離輻射」的警示標誌上碰到它 the kind that can knock electrons off atoms in living cells那種能把活細胞裡原子上的電子打掉的輻射 which is why it can do harm這也是它會造成傷害的原因

The word is a noun. The doing-word is ionize.

The word這個字 is a noun是名詞 The doing-word對應的動詞 is ionize是ionize

British spelling often writes ionisation, with an s; American spelling keeps the z.

British spelling英式拼法 often writes ionisation, with an s常常寫成ionisation，用s American spelling美式拼法 keeps the z保留z