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复习几个均含有“咬、啃”之意的动词。
bite : 指用牙齿钳住或切断，或咬一口。
He bit into the apple.
他咬了一口苹果。
He bites his fingernails.
他咬指甲。
chew : 指用牙磨碎，或者为品尝味道而嚼。
This meat is difficult to chew.
这肉很难嚼。
You don\'t chew your food enough - that\'s why you get indigestion.
你没把食物嚼烂——这就是你消化不良的原因。
Would you like some gum to chew?
你想吃口香糖吗？
She gave the children some sweets to chew (on) during the long car journey.
在漫长的汽车旅行途中，她给了孩子们些糖果嚼着吃。
She sat in the dentist\'s waiting room, nervously chewing (at) (= biting) her nails.
她坐在牙医的候诊室里，紧张地咬着指甲。
gnaw : 指连续不断用齿咬。
Babies like to gnaw hard objects when they\'re teething.
婴儿在长牙时喜欢啃咬硬物。
A dog lay under the table, gnawing on a bone.
一条狗趴在桌下啃骨头。
snap : 指突然猛咬。
The guard dog was snarling and snapping behind the fence.
那条看门狗正在篱笆后面吠咬。
The dogs snarled and snapped at our heels.
几条狗边叫边向着我们的脚后跟咬来。
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