1、collapse
倒塌;塌下
A section of the Bay Bridge had collapsed.
海灣大橋有一段垮塌了。
The roof collapsed in a roar of rock and rubble.
屋頂轟隆一聲塌了下來，碎石瓦礫落了一地。
(體系或機構)崩潰，瓦解，突然失敗
His business empire collapsed under a massive burden of debt.
他的商業帝國無力承擔沉重的債務負擔而垮掉了。
This system has collapsed in most countries where it ruled.
這一體系在其占統治地位的大多數國家都失敗了。
(因生病或虛弱)突然倒下，昏倒
He collapsed following a vigorous exercise session at his home.
在家劇烈運動了一陣后他突然昏倒了。
It's commonplace to see people collapsing from hunger in the streets.
在街上看見有人餓暈是很平常的事。
2、abandon
離棄；遺棄；拋棄
He claimed that his parents had abandoned him.
他聲稱父母遺棄了他。
The road is strewn with abandoned vehicles.
道路上滿是棄置的車輛。
中途放棄，中止（活動、工作等）
The authorities have abandoned any attempt to distribute food.
當局中止了分發食物的嘗試。
The scheme's investors, fearful of bankruptcy, decided to abandon the project.
因為擔心破產，該計劃的投資者決定放棄這個項目。
放任；放縱
He has spent money with gay abandon.
他肆意揮霍錢財。
Their permissiveness toward their children reflects the wild abandon of their own lives.
他們對孩子的放任折射出他們自身生活的放浪形骸。