1、sustain

使持續;保持

But he has sustained his fierce social conscience from young adulthood through old age.

而他從青年時期一直到老年都始終保持著強烈的社會良知。

The parameters within which life can be sustained on Earth are extraordinarily narrow.

地球上生命可以存活下來的地域范圍是非常狹小的。

經受;遭受;蒙受

Every aircraft in there has sustained some damage.

那里的每架飛機都受到了一些損壞。

A seventeen-year-old tourist died late last night of injuries sustained in yesterday's bomb blast.

一位 17 歲的游客在昨天的炸彈爆炸中受傷并于當天深夜身亡。

支持;支援;救濟

The cash dividends they get from the cash crop would sustain them during the lean season.

從經濟作物中獲得的收益能幫助他們度過不景氣的時期。

I am sustained by letters of support and what people say to me in ordinary daily life.

這些支持的信件和人們每天對我的鼓勵一直支撐著我。

2、guarantee

確保；使必然發生

Surplus resources alone do not guarantee growth.

僅有富余的資源并不能確保發展。

a man whose fame guarantees that his calls will nearly always be returned.

其名望能確保他的呼吁幾乎總能得到回應的人

保證…必定發生；承諾做；答應提供

Most states guarantee the right to free and adequate education.

大多數州都保障人們免費享受充分教育的權利。

All students are guaranteed campus accommodation for their first year.

保證安排所有的學生第一年在校內住宿。