慢速英语:New Bike Share Apps in China Create Bike 'Revolution'

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1.convenient adj.方便的; [废语] 适当的
例句：The family thought it was more convenient to eat in the kitchen.
这家人认为在厨房吃饭更方便。

2.illegally adv.不法地
例句：The government illegally eavesdropped on his telephone conversations
政府非法窃听了他的电话。

3.expand vt.扩张; 使…变大; 详述
例句：Engineers noticed that the pipes were not expanding as expected
工程师注意到管道并没有如预期那样膨胀。

4.improve vt.提高（土地、地产）的价值; 利用（机会）; 改善
例句：Both the texture and condition of your hair should improve
你头发的发质与健康状况都应改善。

5.avoid vt.避开，避免，预防
例句：The pilots had to take emergency action to avoid a disaster
飞行员不得不采取紧急措施避免灾难的发生。