1、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

A famous old name on a firm is not necessarily a guarantee of quality.

公司悠久的品牌并不能確保商品的質量。

There is still no guarantee that a formula could be found.

還沒有把握是否能找到一個配方。

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。

為…提供質量保證；擔保

Some builders guarantee their work.

一些建筑公司對其承建工程提供質量保證。

All Dreamland's electric blankets are guaranteed for three years.

所有的夢鄉牌電熱毯質保3年。

2、hold back

（使）猶豫;（使）退縮

The administration had several reasons for holding back.

政府因為幾個原因而猶豫不決。

Melancholy and mistrust of men hold her back.

憂郁的性格和對男人的不信任使她裹足不前。

阻擋;阻止

Stagnation in home sales is holding back economic recovery.

國內銷售的停滯不前正阻礙著經濟復蘇。

Jake wanted to wake up, but sleep held him back.

杰克想要醒來，但睡意使他又沉入夢鄉。

抑制住,忍住(眼淚、笑聲等)

She kept trying to hold back her tears.

她一直在試圖抑制住眼淚。

He could no longer hold back convulsive laughter.

他再也忍不住，前俯后仰地大笑起來。