卡尔：哇！这个地铁系统真是现代又便利啊。
Carl: Wow! This subway system is both modern and convenient.
耶谷高钙香脆饼干含有源自牛奶的钙质，是美味可口又便利的健康食品。
Jacob's Hi-Calcium, enriched with calcium from milk, is a healthy and delicious cracker to enjoy at your convenience.
这就是为什么许多人办了健身房会员又中途退出——只是因为不是很便利。
This is why so many people who buy gym memberships drop out. It's just not that convenient.
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