in a way that shows you feel you are being criticized and do not like it

"It's not something I could have prevented," he said, a bit defensively. “这不是我可以阻止的，”他替自己辩护说。

in a way that is intended to prevent the opposing player or players from scoring points, goals, etc.

He was always returning the ball defensively. 他的回球总是防守型的。

You're not going to beat Australia by batting defensively. 靠防守型的打法是无法战胜澳大利亚队的。

in a way that relates to the part of the team that tries to prevent the other team from scoring

Although we're quite dangerous in attack we are bad defensively. 虽然我们在进攻上颇具危险，但在防守上却很糟糕。

France illustrated how vulnerable Ireland can be defensively. 法国展示了爱尔兰在防守端的脆弱性。