减弱的英文：
weaken
fall off
lower

参考例句：

To soften or muffle the sound of.
减弱…的声音

Fade away; disappear slowly
逐渐凋谢;慢慢减弱

To deprive of strength or vigor;weaken.
减弱力气或力量;使虚弱

The fury of the storm subsided.
狂怒的风暴减弱了。

The decline of a conditioned response following repeated exposure to the conditioned stimulus.
反应减弱因不断接受条件刺激而伴随产生的条件反射减弱

Nothing can abate the force of that argument.
什么也不能减弱那崇论的影响力。

Knuckle cracking doesn't lead to arthritis , but it can lead to decreased grip strength.
虽然指关节啪啪作响不会导致关节炎，但它会减弱关节的握力。

One of a pair of movable boards or plates attached to the hull of a sailing vessel to reduce downwind drift.
下风板，减横漂板装在帆船船体外侧的一对可移动的木质板或金属板的一块，用于减弱顺风漂移

To make slack;weaken.
使松懈，减弱

To diminish in pitch or volume.
音量减弱。

weaken是什么意思：
v. 使虚弱，使衰弱；削弱，减弱；畏缩，动摇

Ministerial resolve has weakened noticeably.
部长决议明显缓和。

The outflow weakens the dollar.
资金外流削弱了美元。

You cannot strengthen the weak by weakening the strong.
削弱强者不能使弱者变得强壮。

fall是什么意思：
v. 落下；倒塌；摔倒；下降；减弱；阵亡
n. 摔倒；下降；秋天；垮台；陷落；瀑布
adj. 秋天的

Sleet is falling.
天上下起了冰雹。

fall into disfavour
失宠失众望

We observed the barometer fall. [The barometer was observed to fall.]
我们看见晴雨表下降。

off是什么意思：
adv. 掉，下；离开；隔开；切断；停止；；休息；光，完，尽；全部地
prep. 从...离开；从...向下；在...的外面；偏离...；从...分岔；不再从事...；低于...
adj. 关着的；停止流通的；延期的；取消的；不工作的；处于...境况的；萧条的
v.（用于祈使句）走开，滚开；站开
n. 关掉

Is the water on or off?
自来水龙头开着还是关着？

The gilt is off.
幻想破灭了。

to nip off; to cut off; to break
掐断