strain

来自古法语 estreindre,绑紧，拽紧，来自拉丁语 stringere,绑紧，拉紧，压紧，来自 PIE*strenk, 紧的，窄的，词源同 strict,stress,stringent.拼写比较 rain 来自古英语 regnian.引申词义扭伤， 过滤，及相关词义压力，拉力，张力等。

来自中古英语 streon,种族， 品系， 血统， 来自古英语 streon,收获， 财富， 繁殖， 来自 Proto-Germanic*streuna,堆积，收获，来自 PIE*stere,展开，伸展，词源同 strew,stratum,structure. 后用于指动植物的品种，品系，以及病菌的类型，种类等。

strain

strain: English has two distinct words strain. The older, ‘line of ancestry’ [OE], denotes etymologically ‘something gained by accumulation’. It comes from the prehistoric base *streu- ‘pile up’, which was related to Latin struere ‘build’ (source of English destroy, structure, etc). In the Old English period the notion of ‘gaining something’ was extended metaphorically to ‘producing offspring’, which formed the jumping-off point for the word’s modern range of meanings. Strain ‘pull tight, wrench’ [13] was borrowed from estreign-, the stem form of Old French estreindre ‘pull tight, tie’.

This in turn was descended from Latin stringere ‘pull tight, tie tight’ (source also of English strait, strict, and stringent [17] and of a host of derived forms such as constrain [14], prestige, restrain [14] and constrict, district, restrict, etc). Strain ‘tune’ [16] is assumed to be the same word, perhaps deriving ultimately from the notion of ‘stretching’ the strings of a musical instrument.
=> construct, destroy, structure; constrain, constrict, district, prestige, restrain, restrict, strait, strict, stringent

strain (v.)

c. 1300, "tie, bind, fasten, gird," from present participle stem of Old French estreindre "bind tightly, clasp, squeeze," from Latin stringere (2) "draw tight, bind tight, compress, press together," from PIE root *streig- "to stroke, rub, press" (cognates: Lithuanian stregti "congeal, freeze, become stiff;" Greek strangein "twist;" Old High German strician "mends nets;" Old English streccian "to stretch;" German stramm, Dutch stram "stiff").

From late 14c. as "tighten; make taut," also "exert oneself; overexert (a body part)," Sense of "press through a filter, put (a liquid) through a strainer" is from early 14c. (implied in strainer); that of "to stress beyond measure, carry too far, make a forced interpretation of" is from mid-15c. Related: Strained; straining.

strain (n.2)

"line of descent, lineage, breed, ancestry," c. 1200, from Old English strion, streon "a gain, acquisition, treasure; a begetting, procreation," from Proto-Germanic *streu-nam- "to pile up," from PIE root *stere- "to spread, extend, stretch out" (see structure (n.)). Hence "race, stock, line" (early 14c.). Applied to animal species from c. 1600; usually involving fairly minor variations, but not distinct from breed (n.). Normal sound development would have yielded *streen, but the word was altered in late Middle English, apparently by influence of strain (n.1).

strain (n.1)

"injury caused by straining," c. 1400, from strain (v.). The meaning "passage of music" (1570s) probably developed from a verbal sense of "to tighten" the voice, which originally was used in reference to the strings of a musical instrument (late 14c.).

1. The whole ship shuddered and trembled at the sudden strain.

突然的拉力使得整只船剧烈颤动。

2. There was a strain of bitterness in his voice.

他的声音听起来有些愤愤不平。

3. Her voice was so low he had to strain to catch it.

她的声音很低，他很费力才听得到。

4. Avoid muscle strain by warming up with slow jogging.

先慢跑热热身，免得拉伤肌肉。

5. Strain the mixture through a double thickness of muslin or cheesecloth.

用双层平纹细布或干酪包布过滤混合料。