Britain's most senior sailor, First Sea Lord, Adm. Jonathon Band, said the underwater crash posed no risk to the safety of the submarines' nuclear reactors and nuclear missiles.
A Safety Strap for Eye Glasses – Break a rubber band in half and tie each end to the part of the glasses frame that sits over your ears.
眼睛的安全带 - 将橡皮筋剪开，并将其两段系在架在耳朵上的两个眼镜腿上。
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Narrow-band ultraviolet B (UVB) has better overall repigmentation rates and safety profile than either topical or oral psoralens and ultraviolet A (PUVA).