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句子翻譯。將下列句子譯成英語。

盡管山很高，但我相信我最終一定能到達山頂。

,though it is very high．

句子翻譯。將下列句子譯成英語。

現(xiàn)在很多人喜歡乘坐高鐵(high-speed train)，因為它更快。

句子翻譯。將下列句子譯成英語。

我們的教室一天打掃兩次。

句子翻譯。將下列句子譯成英語。

杰克不在家，他在圖書館看書。

Jack isn't at home．

句子翻譯。將下列句子譯成英語。

大連有多少人口？

When someone smokes, they hurt not only themselves, but also the people around them．Second-hand smoke greatly increases many dangers, such as respiratory disease(呼吸疾病), cancer and heart disease．

Smoking is bad for your health．However, there are still about 2 billion people smoking all around the world, according to the World Health Organization．