Part IV. Translation (每题4分,共20分) 1. Liquids have no definite shape, yet they have a definite volume. 2. We can ’ t see sound waves as they travel through air. 3. One must make painstaking effort before one could succeed in mastering a foreign language. 4. A gentleman will die for one who appreciates his worth while a woman will beauty herself for one who attracts her. 5. Although you may escort a guest a thousand miles, yet the parting must came at last.