5 kills Sentry Gun Airdrop a placeable Sentry Gun.

当连续击杀5名敌时取得防卫据点。

In the clinical trials, people with depression were treated with either an antidepressant or a placeable (placebo), a pill that contains no medicine.

在这些临场验中，患抑郁们部分使用抗抑郁药物，部分使用不含任何药物安慰剂。