vt.系牢,钉牢,使坚固或稳固,使合在一起:封合,集中:稳定地集中或指向:
vi.附着,扣紧,紧握,紧抱,集中:显著地注意,集中
They fasten with a drawstring.
它们是用拉绳系紧的。
Builders must fasten down roofs of newly-built homes more securely.
建造工人必须把新建房屋的屋顶固定得更牢靠些。
Fasten your seatbelts, please.
请系好安全带。