collateral的詞源是從中世紀(jì)拉丁語collaterālis，再從拉丁語col- “一起”和latus “側(cè)面”，意思是“并行的，伴隨的”。

記憶collateral這個(gè)詞的一個(gè)方法是把它和lateral聯(lián)系起來，想象兩條平行線或者兩個(gè)側(cè)面相連。

collateral有幾個(gè)含義：

1. 并行的，伴隨的；例如：collateral veins 并行靜脈

2. 間接的，附屬的；例如：collateral damage 附帶損害

3. 非直系的，旁系的（指親屬）；例如：collateral relatives 旁系親屬

4. （金融）抵押品，擔(dān)保品；例如：collateral security 擔(dān)保品

You are my collateral love?

The one who came along with another?

You are not my direct choice?

But you are the one who makes me rejoice?

You are my collateral joy?

The one who was a mere decoy?

You are not my main goal?

But you are the one who fills my soul

[太渣了！]