Strontium is a chemical element — a soft, silver-white metal, symbol Sr. It is not something you will ever hold; it reacts fast with air and water, so it is kept in oil.

Strontium Strontium is是 a chemical element一種化學元素 — a soft, silver-white metal是一種柔軟、銀白色的金屬 symbol Sr符號是 Sr。 It它 is not something you will ever hold不是你能拿在手上把玩的東西 it reacts fast with air and water因為它跟空氣和水反應很快 so it is kept in oil所以要保存在油裡。

Two places you actually meet the name. First, fireworks and warning flares: strontium compounds burn a deep red, so the red in a firework is very often strontium.

Two places有兩個地方 you actually meet the name你會真的遇到這個名字。 First第一個 fireworks and warning flares是煙火和警示照明彈 strontium compounds burn a deep red鍶的化合物燃燒時是深紅色 so the red in a firework is very often strontium所以煙火裡的紅色很常就是鍶。

Second, and more seriously, the news. Strontium-90 is a radioactive form made in nuclear reactions, and it is dangerous in a particular way — the body treats it like calcium and stores it in bone, so it turns up in talk about Chernobyl, Fukushima, and nuclear tests.

Second第二個 and more seriously而且比較嚴肅 the news是新聞。 Strontium-90鍶-90 is a radioactive form made in nuclear reactions是核反應產生的放射性形式 and it is dangerous in a particular way而且危險的方式很特別 the body treats it like calcium and stores it in bone身體會把它當成鈣，存進骨頭裡 so it turns up in talk about Chernobyl, Fukushima, and nuclear tests所以講到車諾比、福島和核試驗時常會提到它。

It is a noun only, uncountable; you would say 'strontium is used in…', never 'a strontium'. Say it STRON-tee-um; the -ium ending is the same one as in sodium and calcium.

It它 is a noun only, uncountable只當不可數名詞用 you would say 'strontium is used in…'會說「strontium is used in…」 never 'a strontium'但不會說「a strontium」。 Say it唸法是 STRON-tee-um STRON-tee-um the -ium ending is the same one as in sodium and calcium字尾的 -ium 跟 sodium（鈉）、calcium（鈣）是同一種字尾。