chuckle
[ˈtʃʌkl]
v.& n. 低声轻笑;偷笑
When you chuckle, you laugh quietly.
There are two syllables in this word:
chu-ckle.
EXAMPLES
1. She chuckled at the memory.
想起这件事她就暗自发笑。
2. She gave a chuckle of delight.
她高兴得轻声笑了出来。
gravity
[ˈgrævəti]
n.（事态的）严重性，重大
The gravity of a situation or event is its extreme importance or seriousness.
There are three syllables in this word:
gra-vi-ty.
EXAMPLES
1. They deserve punishment which matches the gravity of their crime.
应当根据罪行的严重性来惩治他们。
2. Not all acts of vengeance are of equal gravity.
并非所有的报复行为都同等恶劣。
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