This rubber ball doesn't blow up easily.

这个橡皮球不易充气。

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Mechanism: Direct blow to anterior thigh (Football/basketball) or from a ball traveling at a high rate of speed (field hockey/lacrosse).

机制：直接打幢击到大腿前侧（足球/篮球）或高速飞过来的球（曲棍球/长曲棍球）。

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Except for such features as wrong operation prevention, stem blow-out proof, mounting, pad provided, the metal to metal sealed ball valves made by WILLIAMSON possess the following unique features.

金属硬密封球阀除了具有防止误操作、防止阀杆飞出、设置驱动装置安装平台等结构特点外，还具有如下独特的特点。

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He took the ball-peen and delivered a crafty blow.

NEWYORKER: Nawabdin Electrician

The goal floored Stoke, and Healy, who had only been on the pitch 10 minutes, provided the decisive knock-out blow four minutes into injury time when Jones cut the ball across goal for the Northern Ireland striker to slot in.

BBC: Sunderland 2-0 Stoke

Clarke eventually fell to a slower ball from Darren Maddy, but Chris Rogers - who had earlier retired on 10 after a blow to the helmet from Neil Carter - returned to continue the onslaught.

BBC: Ambrose injury scare for England