void avoid to v hay ving void ratio tỷ lệ độ rỗng void volume thể tích lỗ rỗng void-forming core lõi tạo rỗng void-free không rỗng vết rỗ co. vết rỗ trống
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avoid water when you take a bath And don't bring water--you can't take it through security. You should buy some at the airport before you board the plane. • Remember to bring a good book or your tablet. Check-in bag • Your check-in bag should be strong. • Your clothes, shoes, and other everyday things should go in your check-in bag. • Make a list to help you remember
