每日一词establish（每日一词sag）

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每日一词establish

sag

英 [saɡ]

美 [sæɡ]

v.

倒下；瘫倒；下跌

n.

下弯；下垂；下陷；菠菜

第三人称单数： sags

现在分词： sagging

过去式： sagged

过去分词： sagged

英文释义：

v.

1.sink or subside gradually under weight or pressure or through lack of strength

(在重量或压力下，或由于乏力而）倒下；瘫倒

2.hang down loosely or unevenly 松垂，弛垂

3.have a downward bulge or curve 下弯；下陷

4.figurative decline to a lower level, usually temporarily 〈喻〉（通常指暂时的）衰退，衰落；下降；下跌；萧条

n.

1.a downward curve or bulge in a structure caused by weakness or excessive weight or pressure

（虚弱或重压引起的）下弯；下垂；下陷

2.[mass noun]Geometry the amount of this, measured as the perpendicular distance from the middle of the curve to the straight line between the two supporting points

【几何】下垂度。

3.figurative a decline, especially a temporary one

〈喻〉(尤指暂时的）衰退，衰落；下降；下跌；萧条。

举个例子：

1.Exports are forging ahead while home sales sag.

出口在稳步上升而国内销售额却在下降。

2.Using traditional manual method, sag calculation is complex and liable to make mistakes.

传统的手工计算弧垂方法不仅计算量大,而且容易出错.

3.The morale of the enemy troops is continuously sagging.

敌军的士气不断低落。

4.He sagged wearily back in his chair.

他疲倦地瘫坐到椅子上。

5.The bed sags in the middle, and is uncomfortable.

床的中间往下塌，很不舒服。

6.Sales are sagging.

销售量在下降。

7.The shelf was beginning to sag beneath the weight of the books upon it.

书架在书的重压下渐渐下弯。

8.Your skin starts to sag as you get older. (13KB)

人老了，皮肤就会慢慢松弛。

常用短语：

sagging stress 中垂应力

oil-rich sag 富油凹陷

mold sag 铸型下垂

Sagging moment 下垂力矩; 正弯矩; 安全下垂力矩;

Superantigen sag 超抗原; 已知超抗原;

Taibei sag 台北凹陷

Moment sagging 下垂力矩

词汇拓展：

近义词

n. depression, impression, imprint

v. sink, drop, drop down

联想词

wobble摇晃;

bulge膨胀, 肿起;

wrinkles皱纹;

stiffness僵硬;

shrinkage收缩;

flatten使……平坦;

wrinkle皱纹;

#每日一词# #快乐LearnEnglish#

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