你仅凭眼睛不可能观察到火星的卫星。 It is not possible for you to observe the moons of Mars with the naked eye. ()
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If I were rich, I would buy a shopping mall. ()
Words like phoenix, dragon, unicorn, and mermaid, are meaningful but they identify no
In a communicative syllabus, the objective of teaching a foreign language is developing learner’s linguistic competence. ()
Varieties of a language are of four types: the standard variety, regional dialets, sociodialects and registers. ()