相比公立学校，私立学校能提供更好的师资，更完善的教学设施和更高的教学质量。
Comparatively, private schools demonstrate particular predomination in supply of better teaching facilities, and higher teaching quality than public ones.
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We regret that we are unable to meet your requirement for the time being as orders have been fully booked.
We have been importing and exporting all kinds of metals and minerals for 30 years and have many customers and friends in over 80 countries and regions.
Payment of the purchase is to be effected by an irrevocable letter of credit in our favour, payable by draft at sight in pounds sterling in London.