fall back

基本解釋

Few companies will take the decision to leave China lightly, especially when no one knows if the price of oil will hit $200 or fall back to $100 in the coming months.
不會有很多企業(yè)會決定輕易離開中國，尤其是目前大家都不知道石油價(jià)格在未來幾個(gè)月內(nèi)是將上升至200美元每桶還是回落到100美元每桶。
For functions and constants, if the current namespace does not contain that function or constant, PHP's fallback mechanism will fall back to the standard PHP function.
對于函數(shù)和常量，如果當(dāng)前的名稱空間不包含這個(gè)函數(shù)或常量，PHP 的后退機(jī)制會后退到標(biāo)準(zhǔn)的 PHP 函數(shù)。
Doctors sometimes fall back on old cures.
醫(yī)生們有時(shí)求助于傳統(tǒng)療法。

An order came for him to fall back and support our right.
Well let's see. My fall back is, I could just do linear search, walk down the list one at a time, just comparing those things. OK. So that's sort of my base. But what if I wanted, you know, how do I want to get to that sorted list? All right?
我只能做線性搜索了,一次遍歷一遍列表，一個(gè)一個(gè)比較，但如果我想要,那怎樣得到有序的列表呢？,現(xiàn)在的一個(gè)問題是，我們排序之前？
麻省理工公開課 - 計(jì)算機(jī)科學(xué)及編程導(dǎo)論課程節(jié)選
Well, I actually think the Russian formalists can be defended against the charge that, unbeknownst to themselves, they fall back in to form-content distinctions by insisting on this variety of dualities.
但是我認(rèn)為,這些形式主義者們在不自覺中，對于形式和內(nèi)容的雙重性,太過偏執(zhí)。
耶魯公開課 - 文學(xué)理論導(dǎo)論課程節(jié)選

If (when) this happens, there will be no third party to fall back on.
ENGADGET: blogger-avatar

回落
By launching the ball into the injected gas, it can form the steady slug flow and prevent liquid to fall back because of the solid interface between gas and liquid phases. Thus, it can improve the instability of gas lift, and reduce the slippage between gas and liquid phases thereby, increase lifting efficiency.
球塞氣舉是一種新型高效的氣舉采油方式，采用U型雙管柱(一注一采)，在地面注入氣流中投入氣舉球，使之在舉升管柱氣體和液體之間形成一連串的固體界面以實(shí)現(xiàn)穩(wěn)定理想的段塞流狀態(tài)，有效地防止液體回落，從而提高氣舉的穩(wěn)定性，減小滑脫損失，提高舉升效率。
計(jì)算機(jī)科學(xué)技術(shù)
后降
備用
退步運(yùn)行