BACI数据库已自2019年底开始，免费开放下载 。
网址：http://www.cepii.fr/cepii/en/bdd_modele/bdd.asp

Access the data: BACI is freely available to anyone, after a quick registration. If you never used a CEPII database before, click on "register" on the right of this page. After filling in the form, you will receive an e-mail to confirm your registration and will be able to access all the CEPII databases. If you are already a registered user for a CEPII database, simply log in using the e-mail address you provided during your registration.

你好，2018年BACI数据能给我一份吗