customs frontier的用法和樣例：
例句
- VAT on self-used articles brought or mailed into China by individuals shall be levied together with Customs Duty.
個(gè)人攜帶或者郵寄進(jìn)境自用物品的增值稅，連同關(guān)稅一并計征。 - They were shot when trying to cross the frontier illegally.
他們在企圖偷越國境時(shí)被擊斃。 - Sanitary supervision at frontier ports should be conducted under the direction of the health quarantine officials.
國境口岸衛生監督應在衛生檢疫官員的指導下進(jìn)行。
