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1·A thread of light emerged from the keyhole.

从锁眼里透出一丝光亮。《牛津词典》

2·I looked through the keyhole.

我通过钥匙孔向里看。《柯林斯英汉双解大词典》

3·She was squinting through the keyhole.

她瞇着眼从锁眼往里看。《牛津词典》

4·We caught her peeping through the keyhole.

她从锁孔偷看时，被我们撞着了。《牛津词典》

5·The aim is to study the effects of cholecystokinin octapeptide (CCK-8) on T-lymphocyte subsets in keyhole limpet haemocyanin (KLH)-immunized mice.

目的是探讨八肽胆囊收缩素（CCK-8）对经钥孔戚血蓝蛋白（KLH）免疫小鼠T淋巴细胞亚群的影响。

6·Anna calls through the keyhole.

安娜通过钥匙孔呼唤。

7·He looked, but there was no keyhole.

他找了找，却找不到锁眼。

8·He likes to listen at the keyhole of others.

他喜欢把耳朵贴在别人家的钥匙孔上听。

9·The drunken fellow was fumbling at the keyhole.

那个醉汉在摸索钥匙孔。

10·The keyhole on the gate was beyond the girl's reach.

大门上的锁孔那个女孩够不着。

(1)keyhole surgery[医]洞眼手术（等于小切口手术）